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Finding the Fourth Proportional to 79,545.77, 109,773.17 and 43,738.20

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Solution

The fourth proportional to 79,545.77, 109,773.17 and 43,738.20 is: 60,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,545.77 : 109,773.17 = 43,738.20 : x
  2. Step 2: Convert to fraction form
    79,545.77/109,773.17 = 43,738.20/x
  3. Step 3: Cross multiply
    79,545.77x = 109,773.17 × 43,738.20
  4. Step 4: Simplify right side
    79,545.77x = 4,801,280,645.40
  5. Step 5: Solve for x
    x = 4,801,280,645.40/79,545.77
  6. Step 6: Final answer
    x = 60,358.72

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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.