Home / 87,437.52-120,654-49,189.68

Finding the Fourth Proportional to 87,437.52, 120,654 and 49,189.68

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Solution

The fourth proportional to 87,437.52, 120,654 and 49,189.68 is: 67,876.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,437.52 : 120,654 = 49,189.68 : x
  2. Step 2: Convert to fraction form
    87,437.52/120,654 = 49,189.68/x
  3. Step 3: Cross multiply
    87,437.52x = 120,654 × 49,189.68
  4. Step 4: Simplify right side
    87,437.52x = 5,934,931,650.72
  5. Step 5: Solve for x
    x = 5,934,931,650.72/87,437.52
  6. Step 6: Final answer
    x = 67,876.26

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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.