Home / 80,996.18-121,478.67-21,816.97

Finding the Fourth Proportional to 80,996.18, 121,478.67 and 21,816.97

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Solution

The fourth proportional to 80,996.18, 121,478.67 and 21,816.97 is: 32,721.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,996.18 : 121,478.67 = 21,816.97 : x
  2. Step 2: Convert to fraction form
    80,996.18/121,478.67 = 21,816.97/x
  3. Step 3: Cross multiply
    80,996.18x = 121,478.67 × 21,816.97
  4. Step 4: Simplify right side
    80,996.18x = 2,650,296,195.33
  5. Step 5: Solve for x
    x = 2,650,296,195.33/80,996.18
  6. Step 6: Final answer
    x = 32,721.25

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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.