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Finding the Fourth Proportional to 68,967, 95,174.55 and 39,159

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Solution

The fourth proportional to 68,967, 95,174.55 and 39,159 is: 54,039.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,967 : 95,174.55 = 39,159 : x
  2. Step 2: Convert to fraction form
    68,967/95,174.55 = 39,159/x
  3. Step 3: Cross multiply
    68,967x = 95,174.55 × 39,159
  4. Step 4: Simplify right side
    68,967x = 3,726,940,203.45
  5. Step 5: Solve for x
    x = 3,726,940,203.45/68,967
  6. Step 6: Final answer
    x = 54,039.47

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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.