Home / 87,788.30-121,147.59-47,502.74

Finding the Fourth Proportional to 87,788.30, 121,147.59 and 47,502.74

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Solution

The fourth proportional to 87,788.30, 121,147.59 and 47,502.74 is: 65,553.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,788.30 : 121,147.59 = 47,502.74 : x
  2. Step 2: Convert to fraction form
    87,788.30/121,147.59 = 47,502.74/x
  3. Step 3: Cross multiply
    87,788.30x = 121,147.59 × 47,502.74
  4. Step 4: Simplify right side
    87,788.30x = 5,754,841,863.66
  5. Step 5: Solve for x
    x = 5,754,841,863.66/87,788.30
  6. Step 6: Final answer
    x = 65,553.64

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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.