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Finding the Fourth Proportional to 70,137.57, 96,789.41 and 38,306.47

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Solution

The fourth proportional to 70,137.57, 96,789.41 and 38,306.47 is: 52,862.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,137.57 : 96,789.41 = 38,306.47 : x
  2. Step 2: Convert to fraction form
    70,137.57/96,789.41 = 38,306.47/x
  3. Step 3: Cross multiply
    70,137.57x = 96,789.41 × 38,306.47
  4. Step 4: Simplify right side
    70,137.57x = 3,707,660,414.37
  5. Step 5: Solve for x
    x = 3,707,660,414.37/70,137.57
  6. Step 6: Final answer
    x = 52,862.69

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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.