Home / 87,789.80-121,149.66-47,504.24

Finding the Fourth Proportional to 87,789.80, 121,149.66 and 47,504.24

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Solution

The fourth proportional to 87,789.80, 121,149.66 and 47,504.24 is: 65,555.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,789.80 : 121,149.66 = 47,504.24 : x
  2. Step 2: Convert to fraction form
    87,789.80/121,149.66 = 47,504.24/x
  3. Step 3: Cross multiply
    87,789.80x = 121,149.66 × 47,504.24
  4. Step 4: Simplify right side
    87,789.80x = 5,755,121,918.81
  5. Step 5: Solve for x
    x = 5,755,121,918.81/87,789.80
  6. Step 6: Final answer
    x = 65,555.71

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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.