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Finding the Fourth Proportional to 80,661.52, 120,914.52 and 38,530.18

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Solution

The fourth proportional to 80,661.52, 120,914.52 and 38,530.18 is: 57,758.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,661.52 : 120,914.52 = 38,530.18 : x
  2. Step 2: Convert to fraction form
    80,661.52/120,914.52 = 38,530.18/x
  3. Step 3: Cross multiply
    80,661.52x = 120,914.52 × 38,530.18
  4. Step 4: Simplify right side
    80,661.52x = 4,658,858,220.21
  5. Step 5: Solve for x
    x = 4,658,858,220.21/80,661.52
  6. Step 6: Final answer
    x = 57,758.13

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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.