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Finding the Fourth Proportional to 68,109.65, 102,189.08 and 34,845.38

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Solution

The fourth proportional to 68,109.65, 102,189.08 and 34,845.38 is: 52,280.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,109.65 : 102,189.08 = 34,845.38 : x
  2. Step 2: Convert to fraction form
    68,109.65/102,189.08 = 34,845.38/x
  3. Step 3: Cross multiply
    68,109.65x = 102,189.08 × 34,845.38
  4. Step 4: Simplify right side
    68,109.65x = 3,560,817,324.45
  5. Step 5: Solve for x
    x = 3,560,817,324.45/68,109.65
  6. Step 6: Final answer
    x = 52,280.66

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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.