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Finding the Fourth Proportional to 68,796.13, 103,183.12 and 18,864.64

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Solution

The fourth proportional to 68,796.13, 103,183.12 and 18,864.64 is: 28,293.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,796.13 : 103,183.12 = 18,864.64 : x
  2. Step 2: Convert to fraction form
    68,796.13/103,183.12 = 18,864.64/x
  3. Step 3: Cross multiply
    68,796.13x = 103,183.12 × 18,864.64
  4. Step 4: Simplify right side
    68,796.13x = 1,946,512,412.88
  5. Step 5: Solve for x
    x = 1,946,512,412.88/68,796.13
  6. Step 6: Final answer
    x = 28,293.92

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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.