Home / 87,378.22-120,578.37-49,136.68

Finding the Fourth Proportional to 87,378.22, 120,578.37 and 49,136.68

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Solution

The fourth proportional to 87,378.22, 120,578.37 and 49,136.68 is: 67,806.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,378.22 : 120,578.37 = 49,136.68 : x
  2. Step 2: Convert to fraction form
    87,378.22/120,578.37 = 49,136.68/x
  3. Step 3: Cross multiply
    87,378.22x = 120,578.37 × 49,136.68
  4. Step 4: Simplify right side
    87,378.22x = 5,924,820,781.61
  5. Step 5: Solve for x
    x = 5,924,820,781.61/87,378.22
  6. Step 6: Final answer
    x = 67,806.61

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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.