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Finding the Fourth Proportional to 36,144.91, 49,879.42 and 20,229.31

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Solution

The fourth proportional to 36,144.91, 49,879.42 and 20,229.31 is: 27,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,144.91 : 49,879.42 = 20,229.31 : x
  2. Step 2: Convert to fraction form
    36,144.91/49,879.42 = 20,229.31/x
  3. Step 3: Cross multiply
    36,144.91x = 49,879.42 × 20,229.31
  4. Step 4: Simplify right side
    36,144.91x = 1,009,026,249.80
  5. Step 5: Solve for x
    x = 1,009,026,249.80/36,144.91
  6. Step 6: Final answer
    x = 27,916.14

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1.5x scale

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.