Home / 68,091.78-102,154.09-21,344.66

Finding the Fourth Proportional to 68,091.78, 102,154.09 and 21,344.66

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Solution

The fourth proportional to 68,091.78, 102,154.09 and 21,344.66 is: 32,022.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,091.78 : 102,154.09 = 21,344.66 : x
  2. Step 2: Convert to fraction form
    68,091.78/102,154.09 = 21,344.66/x
  3. Step 3: Cross multiply
    68,091.78x = 102,154.09 × 21,344.66
  4. Step 4: Simplify right side
    68,091.78x = 2,180,444,318.66
  5. Step 5: Solve for x
    x = 2,180,444,318.66/68,091.78
  6. Step 6: Final answer
    x = 32,022.14

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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.