Finding the Fourth Proportional to 74,414.57, 102,691.70 and 40,422.81
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Solution
The fourth proportional to 74,414.57, 102,691.70 and 40,422.81 is: 55,783.27
Step by Step Solution
- Step 1: Write the proportion equation
74,414.57 : 102,691.70 = 40,422.81 : x - Step 2: Convert to fraction form
74,414.57/102,691.70 = 40,422.81/x - Step 3: Cross multiply
74,414.57x = 102,691.70 × 40,422.81 - Step 4: Simplify right side
74,414.57x = 4,151,087,412.24 - Step 5: Solve for x
x = 4,151,087,412.24/74,414.57 - Step 6: Final answer
x = 55,783.27
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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.