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Finding the Fourth Proportional to 79,556.28, 109,786.72 and 59,229.20

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Solution

The fourth proportional to 79,556.28, 109,786.72 and 59,229.20 is: 81,735.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,556.28 : 109,786.72 = 59,229.20 : x
  2. Step 2: Convert to fraction form
    79,556.28/109,786.72 = 59,229.20/x
  3. Step 3: Cross multiply
    79,556.28x = 109,786.72 × 59,229.20
  4. Step 4: Simplify right side
    79,556.28x = 6,502,579,596.22
  5. Step 5: Solve for x
    x = 6,502,579,596.22/79,556.28
  6. Step 6: Final answer
    x = 81,735.59

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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.