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Finding the Fourth Proportional to 80,789.68, 121,209.22 and 41,374.68

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Solution

The fourth proportional to 80,789.68, 121,209.22 and 41,374.68 is: 62,074.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,789.68 : 121,209.22 = 41,374.68 : x
  2. Step 2: Convert to fraction form
    80,789.68/121,209.22 = 41,374.68/x
  3. Step 3: Cross multiply
    80,789.68x = 121,209.22 × 41,374.68
  4. Step 4: Simplify right side
    80,789.68x = 5,014,992,690.55
  5. Step 5: Solve for x
    x = 5,014,992,690.55/80,789.68
  6. Step 6: Final answer
    x = 62,074.67

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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.