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Finding the Fourth Proportional to 79,507.92, 109,723.56 and 43,699.20

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Solution

The fourth proportional to 79,507.92, 109,723.56 and 43,699.20 is: 60,306.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,507.92 : 109,723.56 = 43,699.20 : x
  2. Step 2: Convert to fraction form
    79,507.92/109,723.56 = 43,699.20/x
  3. Step 3: Cross multiply
    79,507.92x = 109,723.56 × 43,699.20
  4. Step 4: Simplify right side
    79,507.92x = 4,794,831,793.15
  5. Step 5: Solve for x
    x = 4,794,831,793.15/79,507.92
  6. Step 6: Final answer
    x = 60,306.34

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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.