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Finding the Fourth Proportional to 79,648.30, 109,912.57 and 43,350.49

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Solution

The fourth proportional to 79,648.30, 109,912.57 and 43,350.49 is: 59,822.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,648.30 : 109,912.57 = 43,350.49 : x
  2. Step 2: Convert to fraction form
    79,648.30/109,912.57 = 43,350.49/x
  3. Step 3: Cross multiply
    79,648.30x = 109,912.57 × 43,350.49
  4. Step 4: Simplify right side
    79,648.30x = 4,764,763,766.66
  5. Step 5: Solve for x
    x = 4,764,763,766.66/79,648.30
  6. Step 6: Final answer
    x = 59,822.54

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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.