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Finding the Fourth Proportional to 80,520.60, 120,801.78 and 30,601.56

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Solution

The fourth proportional to 80,520.60, 120,801.78 and 30,601.56 is: 45,910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,520.60 : 120,801.78 = 30,601.56 : x
  2. Step 2: Convert to fraction form
    80,520.60/120,801.78 = 30,601.56/x
  3. Step 3: Cross multiply
    80,520.60x = 120,801.78 × 30,601.56
  4. Step 4: Simplify right side
    80,520.60x = 3,696,722,918.78
  5. Step 5: Solve for x
    x = 3,696,722,918.78/80,520.60
  6. Step 6: Final answer
    x = 45,910.28

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1.5x scale

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.