Home / 68,215.33-102,318.00-21,481.57

Finding the Fourth Proportional to 68,215.33, 102,318.00 and 21,481.57

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Solution

The fourth proportional to 68,215.33, 102,318.00 and 21,481.57 is: 32,220.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,215.33 : 102,318.00 = 21,481.57 : x
  2. Step 2: Convert to fraction form
    68,215.33/102,318.00 = 21,481.57/x
  3. Step 3: Cross multiply
    68,215.33x = 102,318.00 × 21,481.57
  4. Step 4: Simplify right side
    68,215.33x = 2,197,951,097.66
  5. Step 5: Solve for x
    x = 2,197,951,097.66/68,215.33
  6. Step 6: Final answer
    x = 32,220.78

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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.