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Finding the Fourth Proportional to 79,074, 109,125.36 and 45,540

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Solution

The fourth proportional to 79,074, 109,125.36 and 45,540 is: 62,847.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,074 : 109,125.36 = 45,540 : x
  2. Step 2: Convert to fraction form
    79,074/109,125.36 = 45,540/x
  3. Step 3: Cross multiply
    79,074x = 109,125.36 × 45,540
  4. Step 4: Simplify right side
    79,074x = 4,969,568,894.40
  5. Step 5: Solve for x
    x = 4,969,568,894.40/79,074
  6. Step 6: Final answer
    x = 62,847.07

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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.