Home / 87,788.09-121,149.12-49,555.28

Finding the Fourth Proportional to 87,788.09, 121,149.12 and 49,555.28

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Solution

The fourth proportional to 87,788.09, 121,149.12 and 49,555.28 is: 68,387.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,788.09 : 121,149.12 = 49,555.28 : x
  2. Step 2: Convert to fraction form
    87,788.09/121,149.12 = 49,555.28/x
  3. Step 3: Cross multiply
    87,788.09x = 121,149.12 × 49,555.28
  4. Step 4: Simplify right side
    87,788.09x = 6,003,577,957.61
  5. Step 5: Solve for x
    x = 6,003,577,957.61/87,788.09
  6. Step 6: Final answer
    x = 68,387.16

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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.