Home / 87,821.07-131,731.95-21,261.10

Finding the Fourth Proportional to 87,821.07, 131,731.95 and 21,261.10

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Solution

The fourth proportional to 87,821.07, 131,731.95 and 21,261.10 is: 31,891.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,821.07 : 131,731.95 = 21,261.10 : x
  2. Step 2: Convert to fraction form
    87,821.07/131,731.95 = 21,261.10/x
  3. Step 3: Cross multiply
    87,821.07x = 131,731.95 × 21,261.10
  4. Step 4: Simplify right side
    87,821.07x = 2,800,766,162.15
  5. Step 5: Solve for x
    x = 2,800,766,162.15/87,821.07
  6. Step 6: Final answer
    x = 31,891.73

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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.