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Finding the Fourth Proportional to 68,441.25, 102,661.73 and 18,522.68

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Solution

The fourth proportional to 68,441.25, 102,661.73 and 18,522.68 is: 27,783.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,441.25 : 102,661.73 = 18,522.68 : x
  2. Step 2: Convert to fraction form
    68,441.25/102,661.73 = 18,522.68/x
  3. Step 3: Cross multiply
    68,441.25x = 102,661.73 × 18,522.68
  4. Step 4: Simplify right side
    68,441.25x = 1,901,569,836.57
  5. Step 5: Solve for x
    x = 1,901,569,836.57/68,441.25
  6. Step 6: Final answer
    x = 27,783.97

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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.