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Finding the Fourth Proportional to 39,793.76, 54,923.20 and 22,809.40

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Solution

The fourth proportional to 39,793.76, 54,923.20 and 22,809.40 is: 31,481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,793.76 : 54,923.20 = 22,809.40 : x
  2. Step 2: Convert to fraction form
    39,793.76/54,923.20 = 22,809.40/x
  3. Step 3: Cross multiply
    39,793.76x = 54,923.20 × 22,809.40
  4. Step 4: Simplify right side
    39,793.76x = 1,252,765,238.08
  5. Step 5: Solve for x
    x = 1,252,765,238.08/39,793.76
  6. Step 6: Final answer
    x = 31,481.45

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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.