Home / 87,209.60-120,349.50-49,483.76

Finding the Fourth Proportional to 87,209.60, 120,349.50 and 49,483.76

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Solution

The fourth proportional to 87,209.60, 120,349.50 and 49,483.76 is: 68,287.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,209.60 : 120,349.50 = 49,483.76 : x
  2. Step 2: Convert to fraction form
    87,209.60/120,349.50 = 49,483.76/x
  3. Step 3: Cross multiply
    87,209.60x = 120,349.50 × 49,483.76
  4. Step 4: Simplify right side
    87,209.60x = 5,955,345,774.12
  5. Step 5: Solve for x
    x = 5,955,345,774.12/87,209.60
  6. Step 6: Final answer
    x = 68,287.73

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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.