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Finding the Fourth Proportional to 79,391.68, 109,556.48 and 47,127.69

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Solution

The fourth proportional to 79,391.68, 109,556.48 and 47,127.69 is: 65,033.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,391.68 : 109,556.48 = 47,127.69 : x
  2. Step 2: Convert to fraction form
    79,391.68/109,556.48 = 47,127.69/x
  3. Step 3: Cross multiply
    79,391.68x = 109,556.48 × 47,127.69
  4. Step 4: Simplify right side
    79,391.68x = 5,163,143,944.75
  5. Step 5: Solve for x
    x = 5,163,143,944.75/79,391.68
  6. Step 6: Final answer
    x = 65,033.82

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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.