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Finding the Fourth Proportional to 83,107, 124,660.48 and 38,764.76

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Solution

The fourth proportional to 83,107, 124,660.48 and 38,764.76 is: 58,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,107 : 124,660.48 = 38,764.76 : x
  2. Step 2: Convert to fraction form
    83,107/124,660.48 = 38,764.76/x
  3. Step 3: Cross multiply
    83,107x = 124,660.48 × 38,764.76
  4. Step 4: Simplify right side
    83,107x = 4,832,433,588.68
  5. Step 5: Solve for x
    x = 4,832,433,588.68/83,107
  6. Step 6: Final answer
    x = 58,147.13

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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.