Finding the Fourth Proportional to 67,731.20, 101,585.28 and 18,471.68
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Solution
The fourth proportional to 67,731.20, 101,585.28 and 18,471.68 is: 27,704.38
Step by Step Solution
- Step 1: Write the proportion equation
67,731.20 : 101,585.28 = 18,471.68 : x - Step 2: Convert to fraction form
67,731.20/101,585.28 = 18,471.68/x - Step 3: Cross multiply
67,731.20x = 101,585.28 × 18,471.68 - Step 4: Simplify right side
67,731.20x = 1,876,450,784.87 - Step 5: Solve for x
x = 1,876,450,784.87/67,731.20 - Step 6: Final answer
x = 27,704.38
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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.