Home / 68,581.54-102,861.92-18,665.53

Finding the Fourth Proportional to 68,581.54, 102,861.92 and 18,665.53

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Solution

The fourth proportional to 68,581.54, 102,861.92 and 18,665.53 is: 27,995.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,581.54 : 102,861.92 = 18,665.53 : x
  2. Step 2: Convert to fraction form
    68,581.54/102,861.92 = 18,665.53/x
  3. Step 3: Cross multiply
    68,581.54x = 102,861.92 × 18,665.53
  4. Step 4: Simplify right side
    68,581.54x = 1,919,972,332.43
  5. Step 5: Solve for x
    x = 1,919,972,332.43/68,581.54
  6. Step 6: Final answer
    x = 27,995.47

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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.