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Finding the Fourth Proportional to 67,397.71, 101,079.25 and 20,001.60

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Solution

The fourth proportional to 67,397.71, 101,079.25 and 20,001.60 is: 29,997.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,397.71 : 101,079.25 = 20,001.60 : x
  2. Step 2: Convert to fraction form
    67,397.71/101,079.25 = 20,001.60/x
  3. Step 3: Cross multiply
    67,397.71x = 101,079.25 × 20,001.60
  4. Step 4: Simplify right side
    67,397.71x = 2,021,746,726.80
  5. Step 5: Solve for x
    x = 2,021,746,726.80/67,397.71
  6. Step 6: Final answer
    x = 29,997.26

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1.5x scale

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.