Home / 87,626.29-120,925.05-49,378.51

Finding the Fourth Proportional to 87,626.29, 120,925.05 and 49,378.51

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Solution

The fourth proportional to 87,626.29, 120,925.05 and 49,378.51 is: 68,142.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,626.29 : 120,925.05 = 49,378.51 : x
  2. Step 2: Convert to fraction form
    87,626.29/120,925.05 = 49,378.51/x
  3. Step 3: Cross multiply
    87,626.29x = 120,925.05 × 49,378.51
  4. Step 4: Simplify right side
    87,626.29x = 5,971,098,790.68
  5. Step 5: Solve for x
    x = 5,971,098,790.68/87,626.29
  6. Step 6: Final answer
    x = 68,142.78

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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.