Home / 87,819.22-131,729.18-21,259.25

Finding the Fourth Proportional to 87,819.22, 131,729.18 and 21,259.25

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Solution

The fourth proportional to 87,819.22, 131,729.18 and 21,259.25 is: 31,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,819.22 : 131,729.18 = 21,259.25 : x
  2. Step 2: Convert to fraction form
    87,819.22/131,729.18 = 21,259.25/x
  3. Step 3: Cross multiply
    87,819.22x = 131,729.18 × 21,259.25
  4. Step 4: Simplify right side
    87,819.22x = 2,800,462,804.97
  5. Step 5: Solve for x
    x = 2,800,462,804.97/87,819.22
  6. Step 6: Final answer
    x = 31,888.95

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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.