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Finding the Fourth Proportional to 79,086.22, 109,138.97 and 43,276.22

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Solution

The fourth proportional to 79,086.22, 109,138.97 and 43,276.22 is: 59,721.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,086.22 : 109,138.97 = 43,276.22 : x
  2. Step 2: Convert to fraction form
    79,086.22/109,138.97 = 43,276.22/x
  3. Step 3: Cross multiply
    79,086.22x = 109,138.97 × 43,276.22
  4. Step 4: Simplify right side
    79,086.22x = 4,723,122,540.25
  5. Step 5: Solve for x
    x = 4,723,122,540.25/79,086.22
  6. Step 6: Final answer
    x = 59,721.18

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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.