Home / 87,103.50-120,205.26-49,380.18

Finding the Fourth Proportional to 87,103.50, 120,205.26 and 49,380.18

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Solution

The fourth proportional to 87,103.50, 120,205.26 and 49,380.18 is: 68,146.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,103.50 : 120,205.26 = 49,380.18 : x
  2. Step 2: Convert to fraction form
    87,103.50/120,205.26 = 49,380.18/x
  3. Step 3: Cross multiply
    87,103.50x = 120,205.26 × 49,380.18
  4. Step 4: Simplify right side
    87,103.50x = 5,935,757,375.75
  5. Step 5: Solve for x
    x = 5,935,757,375.75/87,103.50
  6. Step 6: Final answer
    x = 68,146.03

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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.