Home / 87,385.79-120,591.23-49,145.33

Finding the Fourth Proportional to 87,385.79, 120,591.23 and 49,145.33

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Solution

The fourth proportional to 87,385.79, 120,591.23 and 49,145.33 is: 67,819.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,385.79 : 120,591.23 = 49,145.33 : x
  2. Step 2: Convert to fraction form
    87,385.79/120,591.23 = 49,145.33/x
  3. Step 3: Cross multiply
    87,385.79x = 120,591.23 × 49,145.33
  4. Step 4: Simplify right side
    87,385.79x = 5,926,495,793.46
  5. Step 5: Solve for x
    x = 5,926,495,793.46/87,385.79
  6. Step 6: Final answer
    x = 67,819.90

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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.