Home / 87,687.60-120,985.56-49,961.04

Finding the Fourth Proportional to 87,687.60, 120,985.56 and 49,961.04

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Solution

The fourth proportional to 87,687.60, 120,985.56 and 49,961.04 is: 68,932.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687.60 : 120,985.56 = 49,961.04 : x
  2. Step 2: Convert to fraction form
    87,687.60/120,985.56 = 49,961.04/x
  3. Step 3: Cross multiply
    87,687.60x = 120,985.56 × 49,961.04
  4. Step 4: Simplify right side
    87,687.60x = 6,044,564,402.58
  5. Step 5: Solve for x
    x = 6,044,564,402.58/87,687.60
  6. Step 6: Final answer
    x = 68,932.94

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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.