Finding the Fourth Proportional to 86,107,246.63, 129,221,396.26 and 77,874,562.15
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Solution
The fourth proportional to 86,107,246.63, 129,221,396.26 and 77,874,562.15 is: 116,866,582.64
Step by Step Solution
- Step 1: Write the proportion equation
86,107,246.63 : 129,221,396.26 = 77,874,562.15 : x - Step 2: Convert to fraction form
86,107,246.63/129,221,396.26 = 77,874,562.15/x - Step 3: Cross multiply
86,107,246.63x = 129,221,396.26 × 77,874,562.15 - Step 4: Simplify right side
86,107,246.63x = 10,063,059,653,513,040 - Step 5: Solve for x
x = 10,063,059,653,513,040/86,107,246.63 - Step 6: Final answer
x = 116,866,582.64
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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.