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Finding the Fourth Proportional to 80,349, 120,366.60 and 38,169.04

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Solution

The fourth proportional to 80,349, 120,366.60 and 38,169.04 is: 57,179.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,349 : 120,366.60 = 38,169.04 : x
  2. Step 2: Convert to fraction form
    80,349/120,366.60 = 38,169.04/x
  3. Step 3: Cross multiply
    80,349x = 120,366.60 × 38,169.04
  4. Step 4: Simplify right side
    80,349x = 4,594,277,570.06
  5. Step 5: Solve for x
    x = 4,594,277,570.06/80,349
  6. Step 6: Final answer
    x = 57,179.03

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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.