Home / 80,270.43-120,419.28-40,308.45

Finding the Fourth Proportional to 80,270.43, 120,419.28 and 40,308.45

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Solution

The fourth proportional to 80,270.43, 120,419.28 and 40,308.45 is: 60,469.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,270.43 : 120,419.28 = 40,308.45 : x
  2. Step 2: Convert to fraction form
    80,270.43/120,419.28 = 40,308.45/x
  3. Step 3: Cross multiply
    80,270.43x = 120,419.28 × 40,308.45
  4. Step 4: Simplify right side
    80,270.43x = 4,853,914,526.92
  5. Step 5: Solve for x
    x = 4,853,914,526.92/80,270.43
  6. Step 6: Final answer
    x = 60,469.52

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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.