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Finding the Fourth Proportional to 67,397.79, 101,117.76 and 20,013.15

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Solution

The fourth proportional to 67,397.79, 101,117.76 and 20,013.15 is: 30,025.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,397.79 : 101,117.76 = 20,013.15 : x
  2. Step 2: Convert to fraction form
    67,397.79/101,117.76 = 20,013.15/x
  3. Step 3: Cross multiply
    67,397.79x = 101,117.76 × 20,013.15
  4. Step 4: Simplify right side
    67,397.79x = 2,023,684,898.54
  5. Step 5: Solve for x
    x = 2,023,684,898.54/67,397.79
  6. Step 6: Final answer
    x = 30,025.98

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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.