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Finding the Fourth Proportional to 79,119.62, 109,186.11 and 43,308.86

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Solution

The fourth proportional to 79,119.62, 109,186.11 and 43,308.86 is: 59,766.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,119.62 : 109,186.11 = 43,308.86 : x
  2. Step 2: Convert to fraction form
    79,119.62/109,186.11 = 43,308.86/x
  3. Step 3: Cross multiply
    79,119.62x = 109,186.11 × 43,308.86
  4. Step 4: Simplify right side
    79,119.62x = 4,728,725,406.00
  5. Step 5: Solve for x
    x = 4,728,725,406.00/79,119.62
  6. Step 6: Final answer
    x = 59,766.79

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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.