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Finding the Fourth Proportional to 68,661.45, 102,893.73 and 39,016.65

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Solution

The fourth proportional to 68,661.45, 102,893.73 and 39,016.65 is: 58,469.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,661.45 : 102,893.73 = 39,016.65 : x
  2. Step 2: Convert to fraction form
    68,661.45/102,893.73 = 39,016.65/x
  3. Step 3: Cross multiply
    68,661.45x = 102,893.73 × 39,016.65
  4. Step 4: Simplify right side
    68,661.45x = 4,014,568,650.60
  5. Step 5: Solve for x
    x = 4,014,568,650.60/68,661.45
  6. Step 6: Final answer
    x = 58,469.03

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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.