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Finding the Fourth Proportional to 80,351.20, 120,505.20 and 33,594.40

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Solution

The fourth proportional to 80,351.20, 120,505.20 and 33,594.40 is: 50,382.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,351.20 : 120,505.20 = 33,594.40 : x
  2. Step 2: Convert to fraction form
    80,351.20/120,505.20 = 33,594.40/x
  3. Step 3: Cross multiply
    80,351.20x = 120,505.20 × 33,594.40
  4. Step 4: Simplify right side
    80,351.20x = 4,048,299,890.88
  5. Step 5: Solve for x
    x = 4,048,299,890.88/80,351.20
  6. Step 6: Final answer
    x = 50,382.57

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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.