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Finding the Fourth Proportional to 68,608.45, 102,909.58 and 28,610.97

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Solution

The fourth proportional to 68,608.45, 102,909.58 and 28,610.97 is: 42,915.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,608.45 : 102,909.58 = 28,610.97 : x
  2. Step 2: Convert to fraction form
    68,608.45/102,909.58 = 28,610.97/x
  3. Step 3: Cross multiply
    68,608.45x = 102,909.58 × 28,610.97
  4. Step 4: Simplify right side
    68,608.45x = 2,944,342,906.09
  5. Step 5: Solve for x
    x = 2,944,342,906.09/68,608.45
  6. Step 6: Final answer
    x = 42,915.16

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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.