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Finding the Fourth Proportional to 80,490.40, 120,735.60 and 50,552.80

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Solution

The fourth proportional to 80,490.40, 120,735.60 and 50,552.80 is: 75,829.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,490.40 : 120,735.60 = 50,552.80 : x
  2. Step 2: Convert to fraction form
    80,490.40/120,735.60 = 50,552.80/x
  3. Step 3: Cross multiply
    80,490.40x = 120,735.60 × 50,552.80
  4. Step 4: Simplify right side
    80,490.40x = 6,103,522,639.68
  5. Step 5: Solve for x
    x = 6,103,522,639.68/80,490.40
  6. Step 6: Final answer
    x = 75,829.20

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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.