Home / 87,591-120,875.72-49,865.25

Finding the Fourth Proportional to 87,591, 120,875.72 and 49,865.25

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Solution

The fourth proportional to 87,591, 120,875.72 and 49,865.25 is: 68,814.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,591 : 120,875.72 = 49,865.25 : x
  2. Step 2: Convert to fraction form
    87,591/120,875.72 = 49,865.25/x
  3. Step 3: Cross multiply
    87,591x = 120,875.72 × 49,865.25
  4. Step 4: Simplify right side
    87,591x = 6,027,497,747.40
  5. Step 5: Solve for x
    x = 6,027,497,747.40/87,591
  6. Step 6: Final answer
    x = 68,814.12

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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.