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Finding the Fourth Proportional to 68,179.86, 102,270.06 and 20,794.86

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Solution

The fourth proportional to 68,179.86, 102,270.06 and 20,794.86 is: 31,192.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,179.86 : 102,270.06 = 20,794.86 : x
  2. Step 2: Convert to fraction form
    68,179.86/102,270.06 = 20,794.86/x
  3. Step 3: Cross multiply
    68,179.86x = 102,270.06 × 20,794.86
  4. Step 4: Simplify right side
    68,179.86x = 2,126,691,579.89
  5. Step 5: Solve for x
    x = 2,126,691,579.89/68,179.86
  6. Step 6: Final answer
    x = 31,192.37

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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.