Home / 87,143.28-120,250.74-48,897.66

Finding the Fourth Proportional to 87,143.28, 120,250.74 and 48,897.66

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Solution

The fourth proportional to 87,143.28, 120,250.74 and 48,897.66 is: 67,474.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.28 : 120,250.74 = 48,897.66 : x
  2. Step 2: Convert to fraction form
    87,143.28/120,250.74 = 48,897.66/x
  3. Step 3: Cross multiply
    87,143.28x = 120,250.74 × 48,897.66
  4. Step 4: Simplify right side
    87,143.28x = 5,879,979,799.27
  5. Step 5: Solve for x
    x = 5,879,979,799.27/87,143.28
  6. Step 6: Final answer
    x = 67,474.85

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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.