Home / 87,999.12-132,001.20-31,844.40

Finding the Fourth Proportional to 87,999.12, 132,001.20 and 31,844.40

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Solution

The fourth proportional to 87,999.12, 132,001.20 and 31,844.40 is: 47,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,999.12 : 132,001.20 = 31,844.40 : x
  2. Step 2: Convert to fraction form
    87,999.12/132,001.20 = 31,844.40/x
  3. Step 3: Cross multiply
    87,999.12x = 132,001.20 × 31,844.40
  4. Step 4: Simplify right side
    87,999.12x = 4,203,499,013.28
  5. Step 5: Solve for x
    x = 4,203,499,013.28/87,999.12
  6. Step 6: Final answer
    x = 47,767.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.