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Finding the Fourth Proportional to 80,546.40, 120,704.40 and 59,320.80

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Solution

The fourth proportional to 80,546.40, 120,704.40 and 59,320.80 is: 88,896.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,546.40 : 120,704.40 = 59,320.80 : x
  2. Step 2: Convert to fraction form
    80,546.40/120,704.40 = 59,320.80/x
  3. Step 3: Cross multiply
    80,546.40x = 120,704.40 × 59,320.80
  4. Step 4: Simplify right side
    80,546.40x = 7,160,281,571.52
  5. Step 5: Solve for x
    x = 7,160,281,571.52/80,546.40
  6. Step 6: Final answer
    x = 88,896.36

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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.