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Finding the Fourth Proportional to 80,389.60, 120,627.60 and 33,647.20

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Solution

The fourth proportional to 80,389.60, 120,627.60 and 33,647.20 is: 50,488.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,389.60 : 120,627.60 = 33,647.20 : x
  2. Step 2: Convert to fraction form
    80,389.60/120,627.60 = 33,647.20/x
  3. Step 3: Cross multiply
    80,389.60x = 120,627.60 × 33,647.20
  4. Step 4: Simplify right side
    80,389.60x = 4,058,780,982.72
  5. Step 5: Solve for x
    x = 4,058,780,982.72/80,389.60
  6. Step 6: Final answer
    x = 50,488.88

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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.