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Finding the Fourth Proportional to 79,131.48, 109,204.02 and 43,321.48

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Solution

The fourth proportional to 79,131.48, 109,204.02 and 43,321.48 is: 59,785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,131.48 : 109,204.02 = 43,321.48 : x
  2. Step 2: Convert to fraction form
    79,131.48/109,204.02 = 43,321.48/x
  3. Step 3: Cross multiply
    79,131.48x = 109,204.02 × 43,321.48
  4. Step 4: Simplify right side
    79,131.48x = 4,730,879,768.35
  5. Step 5: Solve for x
    x = 4,730,879,768.35/79,131.48
  6. Step 6: Final answer
    x = 59,785.05

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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.