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Finding the Fourth Proportional to 79,556.71, 109,791.09 and 43,749.45

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Solution

The fourth proportional to 79,556.71, 109,791.09 and 43,749.45 is: 60,375.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,556.71 : 109,791.09 = 43,749.45 : x
  2. Step 2: Convert to fraction form
    79,556.71/109,791.09 = 43,749.45/x
  3. Step 3: Cross multiply
    79,556.71x = 109,791.09 × 43,749.45
  4. Step 4: Simplify right side
    79,556.71x = 4,803,299,034.70
  5. Step 5: Solve for x
    x = 4,803,299,034.70/79,556.71
  6. Step 6: Final answer
    x = 60,375.79

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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.