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Finding the Fourth Proportional to 80,233.80, 120,437.10 and 45,241.80

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Solution

The fourth proportional to 80,233.80, 120,437.10 and 45,241.80 is: 67,911.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,233.80 : 120,437.10 = 45,241.80 : x
  2. Step 2: Convert to fraction form
    80,233.80/120,437.10 = 45,241.80/x
  3. Step 3: Cross multiply
    80,233.80x = 120,437.10 × 45,241.80
  4. Step 4: Simplify right side
    80,233.80x = 5,448,791,190.78
  5. Step 5: Solve for x
    x = 5,448,791,190.78/80,233.80
  6. Step 6: Final answer
    x = 67,911.42

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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.