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Finding the Fourth Proportional to 80,544.40, 120,816.60 and 27,959.20

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Solution

The fourth proportional to 80,544.40, 120,816.60 and 27,959.20 is: 41,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,544.40 : 120,816.60 = 27,959.20 : x
  2. Step 2: Convert to fraction form
    80,544.40/120,816.60 = 27,959.20/x
  3. Step 3: Cross multiply
    80,544.40x = 120,816.60 × 27,959.20
  4. Step 4: Simplify right side
    80,544.40x = 3,377,935,482.72
  5. Step 5: Solve for x
    x = 3,377,935,482.72/80,544.40
  6. Step 6: Final answer
    x = 41,938.80

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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.