Home / 80,748.28-111,266.22-79,659.64

Finding the Fourth Proportional to 80,748.28, 111,266.22 and 79,659.64

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Solution

The fourth proportional to 80,748.28, 111,266.22 and 79,659.64 is: 109,766.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,748.28 : 111,266.22 = 79,659.64 : x
  2. Step 2: Convert to fraction form
    80,748.28/111,266.22 = 79,659.64/x
  3. Step 3: Cross multiply
    80,748.28x = 111,266.22 × 79,659.64
  4. Step 4: Simplify right side
    80,748.28x = 8,863,427,029.36
  5. Step 5: Solve for x
    x = 8,863,427,029.36/80,748.28
  6. Step 6: Final answer
    x = 109,766.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.