Finding the Fourth Proportional to 86,237,959.20, 129,356,938.80 and 40,888,327.20
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Solution
The fourth proportional to 86,237,959.20, 129,356,938.80 and 40,888,327.20 is: 61,332,490.80
Step by Step Solution
- Step 1: Write the proportion equation
86,237,959.20 : 129,356,938.80 = 40,888,327.20 : x - Step 2: Convert to fraction form
86,237,959.20/129,356,938.80 = 40,888,327.20/x - Step 3: Cross multiply
86,237,959.20x = 129,356,938.80 × 40,888,327.20 - Step 4: Simplify right side
86,237,959.20x = 5,289,188,839,244,776 - Step 5: Solve for x
x = 5,289,188,839,244,776/86,237,959.20 - Step 6: Final answer
x = 61,332,490.80
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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.