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Finding the Fourth Proportional to 39,879.92, 55,042.24 and 22,895.64

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Solution

The fourth proportional to 39,879.92, 55,042.24 and 22,895.64 is: 31,600.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,879.92 : 55,042.24 = 22,895.64 : x
  2. Step 2: Convert to fraction form
    39,879.92/55,042.24 = 22,895.64/x
  3. Step 3: Cross multiply
    39,879.92x = 55,042.24 × 22,895.64
  4. Step 4: Simplify right side
    39,879.92x = 1,260,227,311.83
  5. Step 5: Solve for x
    x = 1,260,227,311.83/39,879.92
  6. Step 6: Final answer
    x = 31,600.55

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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.