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Finding the Fourth Proportional to 81,881.74, 122,568.36 and 44,348.59

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Solution

The fourth proportional to 81,881.74, 122,568.36 and 44,348.59 is: 66,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,881.74 : 122,568.36 = 44,348.59 : x
  2. Step 2: Convert to fraction form
    81,881.74/122,568.36 = 44,348.59/x
  3. Step 3: Cross multiply
    81,881.74x = 122,568.36 × 44,348.59
  4. Step 4: Simplify right side
    81,881.74x = 5,435,733,944.61
  5. Step 5: Solve for x
    x = 5,435,733,944.61/81,881.74
  6. Step 6: Final answer
    x = 66,385.18

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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.