Finding the Fourth Proportional to 81,028,013.38, 121,541,838.12 and 62,610,740.84
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Solution
The fourth proportional to 81,028,013.38, 121,541,838.12 and 62,610,740.84 is: 93,915,970.67
Step by Step Solution
- Step 1: Write the proportion equation
81,028,013.38 : 121,541,838.12 = 62,610,740.84 : x - Step 2: Convert to fraction form
81,028,013.38/121,541,838.12 = 62,610,740.84/x - Step 3: Cross multiply
81,028,013.38x = 121,541,838.12 × 62,610,740.84 - Step 4: Simplify right side
81,028,013.38x = 7,609,824,528,052,408 - Step 5: Solve for x
x = 7,609,824,528,052,408/81,028,013.38 - Step 6: Final answer
x = 93,915,970.67
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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.