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Finding the Fourth Proportional to 87,633.62, 120,930.91 and 49,401.12

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Solution

The fourth proportional to 87,633.62, 120,930.91 and 49,401.12 is: 68,171.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,633.62 : 120,930.91 = 49,401.12 : x
  2. Step 2: Convert to fraction form
    87,633.62/120,930.91 = 49,401.12/x
  3. Step 3: Cross multiply
    87,633.62x = 120,930.91 × 49,401.12
  4. Step 4: Simplify right side
    87,633.62x = 5,974,122,396.62
  5. Step 5: Solve for x
    x = 5,974,122,396.62/87,633.62
  6. Step 6: Final answer
    x = 68,171.58

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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.