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Finding the Fourth Proportional to 68,608.62, 102,748.64 and 43,570.31

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Solution

The fourth proportional to 68,608.62, 102,748.64 and 43,570.31 is: 65,251.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,608.62 : 102,748.64 = 43,570.31 : x
  2. Step 2: Convert to fraction form
    68,608.62/102,748.64 = 43,570.31/x
  3. Step 3: Cross multiply
    68,608.62x = 102,748.64 × 43,570.31
  4. Step 4: Simplify right side
    68,608.62x = 4,476,789,365.28
  5. Step 5: Solve for x
    x = 4,476,789,365.28/68,608.62
  6. Step 6: Final answer
    x = 65,251.12

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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.