Home / 39,751.16-54,853.94-21,845.78

Finding the Fourth Proportional to 39,751.16, 54,853.94 and 21,845.78

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Solution

The fourth proportional to 39,751.16, 54,853.94 and 21,845.78 is: 30,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,751.16 : 54,853.94 = 21,845.78 : x
  2. Step 2: Convert to fraction form
    39,751.16/54,853.94 = 21,845.78/x
  3. Step 3: Cross multiply
    39,751.16x = 54,853.94 × 21,845.78
  4. Step 4: Simplify right side
    39,751.16x = 1,198,327,105.37
  5. Step 5: Solve for x
    x = 1,198,327,105.37/39,751.16
  6. Step 6: Final answer
    x = 30,145.71

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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.