Home / 68,629.62-102,948.09-21,277.42

Finding the Fourth Proportional to 68,629.62, 102,948.09 and 21,277.42

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Solution

The fourth proportional to 68,629.62, 102,948.09 and 21,277.42 is: 31,917.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,629.62 : 102,948.09 = 21,277.42 : x
  2. Step 2: Convert to fraction form
    68,629.62/102,948.09 = 21,277.42/x
  3. Step 3: Cross multiply
    68,629.62x = 102,948.09 × 21,277.42
  4. Step 4: Simplify right side
    68,629.62x = 2,190,469,906.12
  5. Step 5: Solve for x
    x = 2,190,469,906.12/68,629.62
  6. Step 6: Final answer
    x = 31,917.27

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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.