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Finding the Fourth Proportional to 80,112.64, 120,052.08 and 45,062.08

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Solution

The fourth proportional to 80,112.64, 120,052.08 and 45,062.08 is: 67,527.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,112.64 : 120,052.08 = 45,062.08 : x
  2. Step 2: Convert to fraction form
    80,112.64/120,052.08 = 45,062.08/x
  3. Step 3: Cross multiply
    80,112.64x = 120,052.08 × 45,062.08
  4. Step 4: Simplify right side
    80,112.64x = 5,409,796,433.13
  5. Step 5: Solve for x
    x = 5,409,796,433.13/80,112.64
  6. Step 6: Final answer
    x = 67,527.38

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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.