Finding the Fourth Proportional to 77,278,654.74, 106,647,101.10 and 42,472,578.90
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Solution
The fourth proportional to 77,278,654.74, 106,647,101.10 and 42,472,578.90 is: 58,613,564.52
Step by Step Solution
- Step 1: Write the proportion equation
77,278,654.74 : 106,647,101.10 = 42,472,578.90 : x - Step 2: Convert to fraction form
77,278,654.74/106,647,101.10 = 42,472,578.90/x - Step 3: Cross multiply
77,278,654.74x = 106,647,101.10 × 42,472,578.90 - Step 4: Simplify right side
77,278,654.74x = 4,529,577,415,926,026 - Step 5: Solve for x
x = 4,529,577,415,926,026/77,278,654.74 - Step 6: Final answer
x = 58,613,564.52
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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.