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Finding the Fourth Proportional to 79,309.44, 109,481.80 and 55,529.36

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Solution

The fourth proportional to 79,309.44, 109,481.80 and 55,529.36 is: 76,654.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,309.44 : 109,481.80 = 55,529.36 : x
  2. Step 2: Convert to fraction form
    79,309.44/109,481.80 = 55,529.36/x
  3. Step 3: Cross multiply
    79,309.44x = 109,481.80 × 55,529.36
  4. Step 4: Simplify right side
    79,309.44x = 6,079,454,285.65
  5. Step 5: Solve for x
    x = 6,079,454,285.65/79,309.44
  6. Step 6: Final answer
    x = 76,654.86

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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.