Home / 87,481.08-131,207.04-31,309.20

Finding the Fourth Proportional to 87,481.08, 131,207.04 and 31,309.20

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Solution

The fourth proportional to 87,481.08, 131,207.04 and 31,309.20 is: 46,958.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,481.08 : 131,207.04 = 31,309.20 : x
  2. Step 2: Convert to fraction form
    87,481.08/131,207.04 = 31,309.20/x
  3. Step 3: Cross multiply
    87,481.08x = 131,207.04 × 31,309.20
  4. Step 4: Simplify right side
    87,481.08x = 4,107,987,456.77
  5. Step 5: Solve for x
    x = 4,107,987,456.77/87,481.08
  6. Step 6: Final answer
    x = 46,958.58

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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.