Home / 80,996.22-121,480.49-21,818.05

Finding the Fourth Proportional to 80,996.22, 121,480.49 and 21,818.05

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Solution

The fourth proportional to 80,996.22, 121,480.49 and 21,818.05 is: 32,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,996.22 : 121,480.49 = 21,818.05 : x
  2. Step 2: Convert to fraction form
    80,996.22/121,480.49 = 21,818.05/x
  3. Step 3: Cross multiply
    80,996.22x = 121,480.49 × 21,818.05
  4. Step 4: Simplify right side
    80,996.22x = 2,650,467,757.20
  5. Step 5: Solve for x
    x = 2,650,467,757.20/80,996.22
  6. Step 6: Final answer
    x = 32,723.35

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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.