Home / 91,426.30-137,139.45-56,251.90

Finding the Fourth Proportional to 91,426.30, 137,139.45 and 56,251.90

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Solution

The fourth proportional to 91,426.30, 137,139.45 and 56,251.90 is: 84,377.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,426.30 : 137,139.45 = 56,251.90 : x
  2. Step 2: Convert to fraction form
    91,426.30/137,139.45 = 56,251.90/x
  3. Step 3: Cross multiply
    91,426.30x = 137,139.45 × 56,251.90
  4. Step 4: Simplify right side
    91,426.30x = 7,714,354,627.46
  5. Step 5: Solve for x
    x = 7,714,354,627.46/91,426.30
  6. Step 6: Final answer
    x = 84,377.85

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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.