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Finding the Fourth Proportional to 79,556.65, 109,786.39 and 43,257.31

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Solution

The fourth proportional to 79,556.65, 109,786.39 and 43,257.31 is: 59,694.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,556.65 : 109,786.39 = 43,257.31 : x
  2. Step 2: Convert to fraction form
    79,556.65/109,786.39 = 43,257.31/x
  3. Step 3: Cross multiply
    79,556.65x = 109,786.39 × 43,257.31
  4. Step 4: Simplify right side
    79,556.65x = 4,749,063,523.40
  5. Step 5: Solve for x
    x = 4,749,063,523.40/79,556.65
  6. Step 6: Final answer
    x = 59,694.11

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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.