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Finding the Fourth Proportional to 68,791.87, 94,936.62 and 51,765.47

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Solution

The fourth proportional to 68,791.87, 94,936.62 and 51,765.47 is: 71,439.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,791.87 : 94,936.62 = 51,765.47 : x
  2. Step 2: Convert to fraction form
    68,791.87/94,936.62 = 51,765.47/x
  3. Step 3: Cross multiply
    68,791.87x = 94,936.62 × 51,765.47
  4. Step 4: Simplify right side
    68,791.87x = 4,914,438,754.51
  5. Step 5: Solve for x
    x = 4,914,438,754.51/68,791.87
  6. Step 6: Final answer
    x = 71,439.24

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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.