Home / 87,359.20-120,517.76-55,511.02

Finding the Fourth Proportional to 87,359.20, 120,517.76 and 55,511.02

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Solution

The fourth proportional to 87,359.20, 120,517.76 and 55,511.02 is: 76,581.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,359.20 : 120,517.76 = 55,511.02 : x
  2. Step 2: Convert to fraction form
    87,359.20/120,517.76 = 55,511.02/x
  3. Step 3: Cross multiply
    87,359.20x = 120,517.76 × 55,511.02
  4. Step 4: Simplify right side
    87,359.20x = 6,690,062,905.57
  5. Step 5: Solve for x
    x = 6,690,062,905.57/87,359.20
  6. Step 6: Final answer
    x = 76,581.09

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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.