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Finding the Fourth Proportional to 68,171.15, 102,270.54 and 28,728.24

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Solution

The fourth proportional to 68,171.15, 102,270.54 and 28,728.24 is: 43,098.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,171.15 : 102,270.54 = 28,728.24 : x
  2. Step 2: Convert to fraction form
    68,171.15/102,270.54 = 28,728.24/x
  3. Step 3: Cross multiply
    68,171.15x = 102,270.54 × 28,728.24
  4. Step 4: Simplify right side
    68,171.15x = 2,938,052,618.05
  5. Step 5: Solve for x
    x = 2,938,052,618.05/68,171.15
  6. Step 6: Final answer
    x = 43,098.18

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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.