Home / 91,439.52-137,170.08-38,819.76

Finding the Fourth Proportional to 91,439.52, 137,170.08 and 38,819.76

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Solution

The fourth proportional to 91,439.52, 137,170.08 and 38,819.76 is: 58,234.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,439.52 : 137,170.08 = 38,819.76 : x
  2. Step 2: Convert to fraction form
    91,439.52/137,170.08 = 38,819.76/x
  3. Step 3: Cross multiply
    91,439.52x = 137,170.08 × 38,819.76
  4. Step 4: Simplify right side
    91,439.52x = 5,324,909,584.78
  5. Step 5: Solve for x
    x = 5,324,909,584.78/91,439.52
  6. Step 6: Final answer
    x = 58,234.23

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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.