Finding the Fourth Proportional to 74,553.15, 102,886.17 and 42,728.19
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Solution
The fourth proportional to 74,553.15, 102,886.17 and 42,728.19 is: 58,966.52
Step by Step Solution
- Step 1: Write the proportion equation
74,553.15 : 102,886.17 = 42,728.19 : x - Step 2: Convert to fraction form
74,553.15/102,886.17 = 42,728.19/x - Step 3: Cross multiply
74,553.15x = 102,886.17 × 42,728.19 - Step 4: Simplify right side
74,553.15x = 4,396,139,820.13 - Step 5: Solve for x
x = 4,396,139,820.13/74,553.15 - Step 6: Final answer
x = 58,966.52
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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.