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Finding the Fourth Proportional to 71,432.55, 98,472.51 and 54,407.97

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Solution

The fourth proportional to 71,432.55, 98,472.51 and 54,407.97 is: 75,003.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,432.55 : 98,472.51 = 54,407.97 : x
  2. Step 2: Convert to fraction form
    71,432.55/98,472.51 = 54,407.97/x
  3. Step 3: Cross multiply
    71,432.55x = 98,472.51 × 54,407.97
  4. Step 4: Simplify right side
    71,432.55x = 5,357,689,369.90
  5. Step 5: Solve for x
    x = 5,357,689,369.90/71,432.55
  6. Step 6: Final answer
    x = 75,003.47

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1.5x scale

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.