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Finding the Fourth Proportional to 69,974.62, 104,967.57 and 21,939.94

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Solution

The fourth proportional to 69,974.62, 104,967.57 and 21,939.94 is: 32,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,974.62 : 104,967.57 = 21,939.94 : x
  2. Step 2: Convert to fraction form
    69,974.62/104,967.57 = 21,939.94/x
  3. Step 3: Cross multiply
    69,974.62x = 104,967.57 × 21,939.94
  4. Step 4: Simplify right side
    69,974.62x = 2,302,982,187.75
  5. Step 5: Solve for x
    x = 2,302,982,187.75/69,974.62
  6. Step 6: Final answer
    x = 32,911.68

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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.