Finding the Fourth Proportional to 66,431,951.20, 99,647,926.80 and 57,184,877.80
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Solution
The fourth proportional to 66,431,951.20, 99,647,926.80 and 57,184,877.80 is: 85,777,316.70
Step by Step Solution
- Step 1: Write the proportion equation
66,431,951.20 : 99,647,926.80 = 57,184,877.80 : x - Step 2: Convert to fraction form
66,431,951.20/99,647,926.80 = 57,184,877.80/x - Step 3: Cross multiply
66,431,951.20x = 99,647,926.80 × 57,184,877.80 - Step 4: Simplify right side
66,431,951.20x = 5,698,354,517,081,345 - Step 5: Solve for x
x = 5,698,354,517,081,345/66,431,951.20 - Step 6: Final answer
x = 85,777,316.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.