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Finding the Fourth Proportional to 80,453.76, 120,636.80 and 27,858.88

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Solution

The fourth proportional to 80,453.76, 120,636.80 and 27,858.88 is: 41,773.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,453.76 : 120,636.80 = 27,858.88 : x
  2. Step 2: Convert to fraction form
    80,453.76/120,636.80 = 27,858.88/x
  3. Step 3: Cross multiply
    80,453.76x = 120,636.80 × 27,858.88
  4. Step 4: Simplify right side
    80,453.76x = 3,360,806,134.78
  5. Step 5: Solve for x
    x = 3,360,806,134.78/80,453.76
  6. Step 6: Final answer
    x = 41,773.14

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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.