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Finding the Fourth Proportional to 68,181.48, 102,270.60 and 18,261.54

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Solution

The fourth proportional to 68,181.48, 102,270.60 and 18,261.54 is: 27,391.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,181.48 : 102,270.60 = 18,261.54 : x
  2. Step 2: Convert to fraction form
    68,181.48/102,270.60 = 18,261.54/x
  3. Step 3: Cross multiply
    68,181.48x = 102,270.60 × 18,261.54
  4. Step 4: Simplify right side
    68,181.48x = 1,867,618,652.72
  5. Step 5: Solve for x
    x = 1,867,618,652.72/68,181.48
  6. Step 6: Final answer
    x = 27,391.88

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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.