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Finding the Fourth Proportional to 80,121.75, 120,067.80 and 44,987.59

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Solution

The fourth proportional to 80,121.75, 120,067.80 and 44,987.59 is: 67,416.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,121.75 : 120,067.80 = 44,987.59 : x
  2. Step 2: Convert to fraction form
    80,121.75/120,067.80 = 44,987.59/x
  3. Step 3: Cross multiply
    80,121.75x = 120,067.80 × 44,987.59
  4. Step 4: Simplify right side
    80,121.75x = 5,401,560,958.60
  5. Step 5: Solve for x
    x = 5,401,560,958.60/80,121.75
  6. Step 6: Final answer
    x = 67,416.92

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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.