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Finding the Fourth Proportional to 81,755.40, 122,568.30 and 44,819.40

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Solution

The fourth proportional to 81,755.40, 122,568.30 and 44,819.40 is: 67,193.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,755.40 : 122,568.30 = 44,819.40 : x
  2. Step 2: Convert to fraction form
    81,755.40/122,568.30 = 44,819.40/x
  3. Step 3: Cross multiply
    81,755.40x = 122,568.30 × 44,819.40
  4. Step 4: Simplify right side
    81,755.40x = 5,493,437,665.02
  5. Step 5: Solve for x
    x = 5,493,437,665.02/81,755.40
  6. Step 6: Final answer
    x = 67,193.58

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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.