Home / 87,489.45-120,737.72-49,250.40

Finding the Fourth Proportional to 87,489.45, 120,737.72 and 49,250.40

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Solution

The fourth proportional to 87,489.45, 120,737.72 and 49,250.40 is: 67,966.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,489.45 : 120,737.72 = 49,250.40 : x
  2. Step 2: Convert to fraction form
    87,489.45/120,737.72 = 49,250.40/x
  3. Step 3: Cross multiply
    87,489.45x = 120,737.72 × 49,250.40
  4. Step 4: Simplify right side
    87,489.45x = 5,946,380,675.45
  5. Step 5: Solve for x
    x = 5,946,380,675.45/87,489.45
  6. Step 6: Final answer
    x = 67,966.83

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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.