Home / 87,720.11-131,565.67-31,549.75

Finding the Fourth Proportional to 87,720.11, 131,565.67 and 31,549.75

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Solution

The fourth proportional to 87,720.11, 131,565.67 and 31,549.75 is: 47,319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,720.11 : 131,565.67 = 31,549.75 : x
  2. Step 2: Convert to fraction form
    87,720.11/131,565.67 = 31,549.75/x
  3. Step 3: Cross multiply
    87,720.11x = 131,565.67 × 31,549.75
  4. Step 4: Simplify right side
    87,720.11x = 4,150,864,329.35
  5. Step 5: Solve for x
    x = 4,150,864,329.35/87,720.11
  6. Step 6: Final answer
    x = 47,319.41

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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.