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Finding the Fourth Proportional to 79,119.92, 109,304.08 and 51,960.54

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Solution

The fourth proportional to 79,119.92, 109,304.08 and 51,960.54 is: 71,783.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,119.92 : 109,304.08 = 51,960.54 : x
  2. Step 2: Convert to fraction form
    79,119.92/109,304.08 = 51,960.54/x
  3. Step 3: Cross multiply
    79,119.92x = 109,304.08 × 51,960.54
  4. Step 4: Simplify right side
    79,119.92x = 5,679,499,021.00
  5. Step 5: Solve for x
    x = 5,679,499,021.00/79,119.92
  6. Step 6: Final answer
    x = 71,783.43

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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.