Home / 81,821.43-122,732.15-22,657.10

Finding the Fourth Proportional to 81,821.43, 122,732.15 and 22,657.10

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Solution

The fourth proportional to 81,821.43, 122,732.15 and 22,657.10 is: 33,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,821.43 : 122,732.15 = 22,657.10 : x
  2. Step 2: Convert to fraction form
    81,821.43/122,732.15 = 22,657.10/x
  3. Step 3: Cross multiply
    81,821.43x = 122,732.15 × 22,657.10
  4. Step 4: Simplify right side
    81,821.43x = 2,780,753,868.82
  5. Step 5: Solve for x
    x = 2,780,753,868.82/81,821.43
  6. Step 6: Final answer
    x = 33,985.64

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Similar ratio
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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.