Home / 91,877.76-137,824.20-39,287.70

Finding the Fourth Proportional to 91,877.76, 137,824.20 and 39,287.70

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Solution

The fourth proportional to 91,877.76, 137,824.20 and 39,287.70 is: 58,934.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,877.76 : 137,824.20 = 39,287.70 : x
  2. Step 2: Convert to fraction form
    91,877.76/137,824.20 = 39,287.70/x
  3. Step 3: Cross multiply
    91,877.76x = 137,824.20 × 39,287.70
  4. Step 4: Simplify right side
    91,877.76x = 5,414,795,822.34
  5. Step 5: Solve for x
    x = 5,414,795,822.34/91,877.76
  6. Step 6: Final answer
    x = 58,934.78

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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.