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Finding the Fourth Proportional to 68,991.67, 95,208.29 and 40,309.17

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Solution

The fourth proportional to 68,991.67, 95,208.29 and 40,309.17 is: 55,626.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,991.67 : 95,208.29 = 40,309.17 : x
  2. Step 2: Convert to fraction form
    68,991.67/95,208.29 = 40,309.17/x
  3. Step 3: Cross multiply
    68,991.67x = 95,208.29 × 40,309.17
  4. Step 4: Simplify right side
    68,991.67x = 3,837,766,469.43
  5. Step 5: Solve for x
    x = 3,837,766,469.43/68,991.67
  6. Step 6: Final answer
    x = 55,626.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.