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Finding the Fourth Proportional to 81,498, 122,247.84 and 32,250

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Solution

The fourth proportional to 81,498, 122,247.84 and 32,250 is: 48,375.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,498 : 122,247.84 = 32,250 : x
  2. Step 2: Convert to fraction form
    81,498/122,247.84 = 32,250/x
  3. Step 3: Cross multiply
    81,498x = 122,247.84 × 32,250
  4. Step 4: Simplify right side
    81,498x = 3,942,492,840
  5. Step 5: Solve for x
    x = 3,942,492,840/81,498
  6. Step 6: Final answer
    x = 48,375.33

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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.