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Finding the Fourth Proportional to 80,559.36, 120,873.60 and 45,446.40

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Solution

The fourth proportional to 80,559.36, 120,873.60 and 45,446.40 is: 68,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,559.36 : 120,873.60 = 45,446.40 : x
  2. Step 2: Convert to fraction form
    80,559.36/120,873.60 = 45,446.40/x
  3. Step 3: Cross multiply
    80,559.36x = 120,873.60 × 45,446.40
  4. Step 4: Simplify right side
    80,559.36x = 5,493,269,975.04
  5. Step 5: Solve for x
    x = 5,493,269,975.04/80,559.36
  6. Step 6: Final answer
    x = 68,189.10

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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.