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Finding the Fourth Proportional to 80,481.94, 120,725.44 and 38,366.62

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Solution

The fourth proportional to 80,481.94, 120,725.44 and 38,366.62 is: 57,551.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,481.94 : 120,725.44 = 38,366.62 : x
  2. Step 2: Convert to fraction form
    80,481.94/120,725.44 = 38,366.62/x
  3. Step 3: Cross multiply
    80,481.94x = 120,725.44 × 38,366.62
  4. Step 4: Simplify right side
    80,481.94x = 4,631,827,080.81
  5. Step 5: Solve for x
    x = 4,631,827,080.81/80,481.94
  6. Step 6: Final answer
    x = 57,551.14

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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.