Home / 87,540.93-131,307.03-31,380.12

Finding the Fourth Proportional to 87,540.93, 131,307.03 and 31,380.12

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Solution

The fourth proportional to 87,540.93, 131,307.03 and 31,380.12 is: 47,068.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,540.93 : 131,307.03 = 31,380.12 : x
  2. Step 2: Convert to fraction form
    87,540.93/131,307.03 = 31,380.12/x
  3. Step 3: Cross multiply
    87,540.93x = 131,307.03 × 31,380.12
  4. Step 4: Simplify right side
    87,540.93x = 4,120,430,358.24
  5. Step 5: Solve for x
    x = 4,120,430,358.24/87,540.93
  6. Step 6: Final answer
    x = 47,068.62

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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.