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Finding the Fourth Proportional to 68,091.86, 102,137.79 and 21,348.38

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Solution

The fourth proportional to 68,091.86, 102,137.79 and 21,348.38 is: 32,022.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,091.86 : 102,137.79 = 21,348.38 : x
  2. Step 2: Convert to fraction form
    68,091.86/102,137.79 = 21,348.38/x
  3. Step 3: Cross multiply
    68,091.86x = 102,137.79 × 21,348.38
  4. Step 4: Simplify right side
    68,091.86x = 2,180,475,842.59
  5. Step 5: Solve for x
    x = 2,180,475,842.59/68,091.86
  6. Step 6: Final answer
    x = 32,022.56

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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.