Home / 87,331.64-120,422.30-58,988.12

Finding the Fourth Proportional to 87,331.64, 120,422.30 and 58,988.12

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Solution

The fourth proportional to 87,331.64, 120,422.30 and 58,988.12 is: 81,339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,331.64 : 120,422.30 = 58,988.12 : x
  2. Step 2: Convert to fraction form
    87,331.64/120,422.30 = 58,988.12/x
  3. Step 3: Cross multiply
    87,331.64x = 120,422.30 × 58,988.12
  4. Step 4: Simplify right side
    87,331.64x = 7,103,485,083.08
  5. Step 5: Solve for x
    x = 7,103,485,083.08/87,331.64
  6. Step 6: Final answer
    x = 81,339.19

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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.