Finding the Fourth Proportional to 66,651,977.60, 91,986,656.16 and 38,395,325.12
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Solution
The fourth proportional to 66,651,977.60, 91,986,656.16 and 38,395,325.12 is: 52,989,539.05
Step by Step Solution
- Step 1: Write the proportion equation
66,651,977.60 : 91,986,656.16 = 38,395,325.12 : x - Step 2: Convert to fraction form
66,651,977.60/91,986,656.16 = 38,395,325.12/x - Step 3: Cross multiply
66,651,977.60x = 91,986,656.16 × 38,395,325.12 - Step 4: Simplify right side
66,651,977.60x = 3,531,857,569,964,850.50 - Step 5: Solve for x
x = 3,531,857,569,964,850.50/66,651,977.60 - Step 6: Final answer
x = 52,989,539.05
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.