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Finding the Fourth Proportional to 80,680.60, 120,977.70 and 33,880.60

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Solution

The fourth proportional to 80,680.60, 120,977.70 and 33,880.60 is: 50,802.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,680.60 : 120,977.70 = 33,880.60 : x
  2. Step 2: Convert to fraction form
    80,680.60/120,977.70 = 33,880.60/x
  3. Step 3: Cross multiply
    80,680.60x = 120,977.70 × 33,880.60
  4. Step 4: Simplify right side
    80,680.60x = 4,098,797,062.62
  5. Step 5: Solve for x
    x = 4,098,797,062.62/80,680.60
  6. Step 6: Final answer
    x = 50,802.76

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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.