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Finding the Fourth Proportional to 80,308.40, 120,394.86 and 50,660.88

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Solution

The fourth proportional to 80,308.40, 120,394.86 and 50,660.88 is: 75,948.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,308.40 : 120,394.86 = 50,660.88 : x
  2. Step 2: Convert to fraction form
    80,308.40/120,394.86 = 50,660.88/x
  3. Step 3: Cross multiply
    80,308.40x = 120,394.86 × 50,660.88
  4. Step 4: Simplify right side
    80,308.40x = 6,099,309,555.08
  5. Step 5: Solve for x
    x = 6,099,309,555.08/80,308.40
  6. Step 6: Final answer
    x = 75,948.59

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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.