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Finding the Fourth Proportional to 70,137.60, 96,789.26 and 38,306.64

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Solution

The fourth proportional to 70,137.60, 96,789.26 and 38,306.64 is: 52,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,137.60 : 96,789.26 = 38,306.64 : x
  2. Step 2: Convert to fraction form
    70,137.60/96,789.26 = 38,306.64/x
  3. Step 3: Cross multiply
    70,137.60x = 96,789.26 × 38,306.64
  4. Step 4: Simplify right side
    70,137.60x = 3,707,671,338.69
  5. Step 5: Solve for x
    x = 3,707,671,338.69/70,137.60
  6. Step 6: Final answer
    x = 52,862.82

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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.