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Finding the Fourth Proportional to 79,193.70, 109,289.25 and 43,383.80

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Solution

The fourth proportional to 79,193.70, 109,289.25 and 43,383.80 is: 59,870.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,193.70 : 109,289.25 = 43,383.80 : x
  2. Step 2: Convert to fraction form
    79,193.70/109,289.25 = 43,383.80/x
  3. Step 3: Cross multiply
    79,193.70x = 109,289.25 × 43,383.80
  4. Step 4: Simplify right side
    79,193.70x = 4,741,383,237.37
  5. Step 5: Solve for x
    x = 4,741,383,237.37/79,193.70
  6. Step 6: Final answer
    x = 59,870.71

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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.