Home / 87,820.41-131,730.96-21,260.43

Finding the Fourth Proportional to 87,820.41, 131,730.96 and 21,260.43

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Solution

The fourth proportional to 87,820.41, 131,730.96 and 21,260.43 is: 31,890.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,820.41 : 131,730.96 = 21,260.43 : x
  2. Step 2: Convert to fraction form
    87,820.41/131,730.96 = 21,260.43/x
  3. Step 3: Cross multiply
    87,820.41x = 131,730.96 × 21,260.43
  4. Step 4: Simplify right side
    87,820.41x = 2,800,656,853.91
  5. Step 5: Solve for x
    x = 2,800,656,853.91/87,820.41
  6. Step 6: Final answer
    x = 31,890.73

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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.