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Finding the Fourth Proportional to 80,379.60, 120,612.60 and 33,637.20

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Solution

The fourth proportional to 80,379.60, 120,612.60 and 33,637.20 is: 50,473.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,379.60 : 120,612.60 = 33,637.20 : x
  2. Step 2: Convert to fraction form
    80,379.60/120,612.60 = 33,637.20/x
  3. Step 3: Cross multiply
    80,379.60x = 120,612.60 × 33,637.20
  4. Step 4: Simplify right side
    80,379.60x = 4,057,070,148.72
  5. Step 5: Solve for x
    x = 4,057,070,148.72/80,379.60
  6. Step 6: Final answer
    x = 50,473.88

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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.