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Finding the Fourth Proportional to 79,177.72, 109,265.30 and 43,367.72

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Solution

The fourth proportional to 79,177.72, 109,265.30 and 43,367.72 is: 59,847.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,177.72 : 109,265.30 = 43,367.72 : x
  2. Step 2: Convert to fraction form
    79,177.72/109,265.30 = 43,367.72/x
  3. Step 3: Cross multiply
    79,177.72x = 109,265.30 × 43,367.72
  4. Step 4: Simplify right side
    79,177.72x = 4,738,586,936.12
  5. Step 5: Solve for x
    x = 4,738,586,936.12/79,177.72
  6. Step 6: Final answer
    x = 59,847.48

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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.