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Finding the Fourth Proportional to 68,469.10, 102,703.65 and 63,861.10

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Solution

The fourth proportional to 68,469.10, 102,703.65 and 63,861.10 is: 95,791.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,469.10 : 102,703.65 = 63,861.10 : x
  2. Step 2: Convert to fraction form
    68,469.10/102,703.65 = 63,861.10/x
  3. Step 3: Cross multiply
    68,469.10x = 102,703.65 × 63,861.10
  4. Step 4: Simplify right side
    68,469.10x = 6,558,768,063.02
  5. Step 5: Solve for x
    x = 6,558,768,063.02/68,469.10
  6. Step 6: Final answer
    x = 95,791.65

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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.