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Finding the Fourth Proportional to 80,618.60, 120,947.10 and 33,847.40

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Solution

The fourth proportional to 80,618.60, 120,947.10 and 33,847.40 is: 50,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,618.60 : 120,947.10 = 33,847.40 : x
  2. Step 2: Convert to fraction form
    80,618.60/120,947.10 = 33,847.40/x
  3. Step 3: Cross multiply
    80,618.60x = 120,947.10 × 33,847.40
  4. Step 4: Simplify right side
    80,618.60x = 4,093,744,872.54
  5. Step 5: Solve for x
    x = 4,093,744,872.54/80,618.60
  6. Step 6: Final answer
    x = 50,779.16

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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.