Home / 84,660.62-126,991.13-21,480.75

Finding the Fourth Proportional to 84,660.62, 126,991.13 and 21,480.75

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Solution

The fourth proportional to 84,660.62, 126,991.13 and 21,480.75 is: 32,221.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,660.62 : 126,991.13 = 21,480.75 : x
  2. Step 2: Convert to fraction form
    84,660.62/126,991.13 = 21,480.75/x
  3. Step 3: Cross multiply
    84,660.62x = 126,991.13 × 21,480.75
  4. Step 4: Simplify right side
    84,660.62x = 2,727,864,608.34
  5. Step 5: Solve for x
    x = 2,727,864,608.34/84,660.62
  6. Step 6: Final answer
    x = 32,221.18

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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.