Home / 87,843.18-121,223.80-47,557.38

Finding the Fourth Proportional to 87,843.18, 121,223.80 and 47,557.38

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Solution

The fourth proportional to 87,843.18, 121,223.80 and 47,557.38 is: 65,629.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,843.18 : 121,223.80 = 47,557.38 : x
  2. Step 2: Convert to fraction form
    87,843.18/121,223.80 = 47,557.38/x
  3. Step 3: Cross multiply
    87,843.18x = 121,223.80 × 47,557.38
  4. Step 4: Simplify right side
    87,843.18x = 5,765,086,321.64
  5. Step 5: Solve for x
    x = 5,765,086,321.64/87,843.18
  6. Step 6: Final answer
    x = 65,629.30

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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.