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Finding the Fourth Proportional to 81,915.29, 122,872.98 and 22,750.95

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Solution

The fourth proportional to 81,915.29, 122,872.98 and 22,750.95 is: 34,126.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,915.29 : 122,872.98 = 22,750.95 : x
  2. Step 2: Convert to fraction form
    81,915.29/122,872.98 = 22,750.95/x
  3. Step 3: Cross multiply
    81,915.29x = 122,872.98 × 22,750.95
  4. Step 4: Simplify right side
    81,915.29x = 2,795,477,024.33
  5. Step 5: Solve for x
    x = 2,795,477,024.33/81,915.29
  6. Step 6: Final answer
    x = 34,126.44

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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.