PLEASE HELP I'M ON THE FINAL MATH TEST AND GOT A 64 ON THE FIRST ATTEMPT AND I DON'T WANT TO FAIL AGAIN I'LL GIVE 100 POINTS BUT I HAVE SEEN A LOT OF PEOPLE SAYING IT'S 81 AND THAT IS WRONG In the map below, the path from the whales to the sharks is parallel to the path from the penguins to the fish tanks.

A map of the aquarium at the City Zoo. A triangle has points whales, sharks, dolphins. The distance from Whales to sharks is 54 feet and from whales to dolphins is 30 feet. A triangle with points Dolphins, fish tanks, penguins. The distance from dolphins to fish tanks is 45 feet, and from penguins to fish tanks is x feet.

What is the distance between the penguins and the fish tanks?
25 feet
36 feet
69 feet
81 feet