Home / 87,591.20-120,876.02-49,865.45

Finding the Fourth Proportional to 87,591.20, 120,876.02 and 49,865.45

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Solution

The fourth proportional to 87,591.20, 120,876.02 and 49,865.45 is: 68,814.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,591.20 : 120,876.02 = 49,865.45 : x
  2. Step 2: Convert to fraction form
    87,591.20/120,876.02 = 49,865.45/x
  3. Step 3: Cross multiply
    87,591.20x = 120,876.02 × 49,865.45
  4. Step 4: Simplify right side
    87,591.20x = 6,027,536,277.80
  5. Step 5: Solve for x
    x = 6,027,536,277.80/87,591.20
  6. Step 6: Final answer
    x = 68,814.41

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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.