Home / 80,811.30-121,175.45-43,402.86

Finding the Fourth Proportional to 80,811.30, 121,175.45 and 43,402.86

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Solution

The fourth proportional to 80,811.30, 121,175.45 and 43,402.86 is: 65,082.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,811.30 : 121,175.45 = 43,402.86 : x
  2. Step 2: Convert to fraction form
    80,811.30/121,175.45 = 43,402.86/x
  3. Step 3: Cross multiply
    80,811.30x = 121,175.45 × 43,402.86
  4. Step 4: Simplify right side
    80,811.30x = 5,259,360,874.77
  5. Step 5: Solve for x
    x = 5,259,360,874.77/80,811.30
  6. Step 6: Final answer
    x = 65,082.00

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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.