Real Madrid 4-0 Cruz Azul: Gareth Bale, Karim Benzema, Sergio Ramos and Isco on target as Carlo Ancelotti's men reach FIFA Club World Cup final

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Real Madrid are 90 minutes from being crowned the best team on the planet after beating Mexican side Cruz Azul 4-0 to reach Saturday's World Club Cup final.

With their 21st straight win they won their semi-final in Marrakech to set-up a potential showdown with the Copa Libertadores winners San Lorenzo who first need to beat Auckland City in Wednesday's second semi-final.

Madrid started like a team that had won their last 20 games and could have been ahead inside three minutes when full back Dani Carvajal tore down the right and crossed to Karim Benzema. The Frenchman headed the ball down to Cristiano Ronaldo inside the six-yard box but his shot was saved at point-blank range by Jesus Corona in the Cruz Azul goal.

VIDEO Scroll down to watch Ronaldo's rabona and match highlights of Real Madrid vs Cruz Azul 

Real Madrid defender Sergio Ramos (third from left) gets away from his marker to head his side into the lead against Cruz Azul

Spain international Ramos celebrates putting Real Madrid 1-0 up in their Club World Cup semi-final in Marrakesh

Benzema skips in ahead of a Cruz Azul defender to convert a cross for Real Madrid's second goal of the night

Benzema raises his arm in the air in celebration after pouncing on a cross to put Real Madrid 2-0 up on Tuesday evening

The Mexican keeper was less impressive on 15 minutes when he came for Toni Kroos' corner and missed it, allowing Sergio Ramos to head it into the empty net. 

Carvajal had won the free-kick down the right and Kroos' perfect delivery was dispatched by Ramos, the man who got the all-important Champions League equaliser against Atletico Madrid, that helped put Real Madrid in this competition.

It was Kroos' eighth assist of the season. He is still a long way from conversing fluently with his team-mates in Spanish but the understanding on the pitch is word perfect. At this stage of the campaign he looks like the signing of the summer.

From the next Kroos corner Bale jumped to make contact and was punched by defender Hernan Bernardello as he landed; despite his complaints to the referee play continued.

Kroos almost scored himself on the half hour with a stinging shot that Corona pushed away. Then minutes from the break Benzema got the second, turning in the ever-dangerous Carvajal's cross from the right. The full back was pushing Kroos for man-of-the-match and Benzema's execution was worthy of the assist.

When Cruz Azul looked as if they had found a way back into the game Iker Casillas slammed the door shut. 

Ramos was harshly judged to have brought down Mariano Pavone but when Gerardo Torrado stepped up to take the spot-kick Casillas guessed right and pushed it round his post. 

He was up to the challenge again moments later when a poor back pass from Asier Illaramendi let in Pavone but the Spain keeper came out to make the save. 

An unmarked Gareth Bale (left) heads Real Madrid into a comfortable three-goal lead after connecting with a Cristiano Ronaldo cross

Real Madrid's record signing Bale (left) begins his celebration after scoring his side's third goal of the evening

Bale (third from right) is congratulated by his team-mates after heading Real Madrid into a 3-0 lead after 50 minutes

Former Malaga starlet Isco finishes off a fine run with a low finish past Cruz Azul goalkeeper Corona to make it 4-0

Cristiano Ronaldo (centre) bursts away from Cruz Azul's Joao Rojas (left) and Gerardo Flores during the opening period

Real Madrid right back Dani Carvajal (right) moves away from Flores during a dominant half for Carlo Ancelotti's side

Goalscorer Benzema (right) attempts to avoid a sliding challenge from Cruz Azul's Francisco Rodriguez

Real Madrid's Brazilian defender Marcelo (right) attempts to block a cross as Cruz Azul's Rojas cuts back

Five minutes into the second half Gareth Bale made it 3-0, heading in Ronaldo's cross after the Portuguese had been played in by Benzema. It was a BBC production with Benzema starting the move, Bale ending it and Cristiano providing the perfect centre.

He then tried to score the most audacious of goals for what would have been 4-0. Bale went down the left and crossed and Ronaldo caught the ball perfectly with what can only be described as a 'rabona' volley but Corona made the save.

Isco scored a glorious fourth, tip-toeing through the centre of the Cruz Azul defence and shooting past Corona. 

Ramos was taken off in the second half holding the back of his thigh but Real replaced him with the brilliant Raphael Varane. And in another show of their immense strength in depth two more substitutes, Jese and Sami Khedira, almost combined for the fifth but the German's header hit a post.

Real Madrid forward Bale (right) raises his right boot to challenge Cruz Azul's Fausto Pinto for the ball

Real Madrid manager Carlo Ancelotti watches his team in action from the touchline at the Grand Stade de Marrakesh

VIDEO Real ready for any challenger - Ancelotti

Portuguese superstar Ronaldo appears frustrated after being left on the turf following a robust challenge 

Bale loses his balance slightly while under pressure from Cruz Azul forward Hernan Bernardello (right)