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Finding the Fourth Proportional to 70,229.40, 96,913.56 and 38,398.80

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Solution

The fourth proportional to 70,229.40, 96,913.56 and 38,398.80 is: 52,988.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,229.40 : 96,913.56 = 38,398.80 : x
  2. Step 2: Convert to fraction form
    70,229.40/96,913.56 = 38,398.80/x
  3. Step 3: Cross multiply
    70,229.40x = 96,913.56 × 38,398.80
  4. Step 4: Simplify right side
    70,229.40x = 3,721,364,407.73
  5. Step 5: Solve for x
    x = 3,721,364,407.73/70,229.40
  6. Step 6: Final answer
    x = 52,988.70

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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.