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Finding the Fourth Proportional to 83,855.20, 125,928.60 and 44,489.20

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Solution

The fourth proportional to 83,855.20, 125,928.60 and 44,489.20 is: 66,811.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,855.20 : 125,928.60 = 44,489.20 : x
  2. Step 2: Convert to fraction form
    83,855.20/125,928.60 = 44,489.20/x
  3. Step 3: Cross multiply
    83,855.20x = 125,928.60 × 44,489.20
  4. Step 4: Simplify right side
    83,855.20x = 5,602,462,671.12
  5. Step 5: Solve for x
    x = 5,602,462,671.12/83,855.20
  6. Step 6: Final answer
    x = 66,811.15

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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.