Home / 87,143.38-120,250.85-48,897.68

Finding the Fourth Proportional to 87,143.38, 120,250.85 and 48,897.68

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Solution

The fourth proportional to 87,143.38, 120,250.85 and 48,897.68 is: 67,474.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.38 : 120,250.85 = 48,897.68 : x
  2. Step 2: Convert to fraction form
    87,143.38/120,250.85 = 48,897.68/x
  3. Step 3: Cross multiply
    87,143.38x = 120,250.85 × 48,897.68
  4. Step 4: Simplify right side
    87,143.38x = 5,879,986,737.29
  5. Step 5: Solve for x
    x = 5,879,986,737.29/87,143.38
  6. Step 6: Final answer
    x = 67,474.85

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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.