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Finding the Fourth Proportional to 79,193.67, 109,288.50 and 43,381.31

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Solution

The fourth proportional to 79,193.67, 109,288.50 and 43,381.31 is: 59,866.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,193.67 : 109,288.50 = 43,381.31 : x
  2. Step 2: Convert to fraction form
    79,193.67/109,288.50 = 43,381.31/x
  3. Step 3: Cross multiply
    79,193.67x = 109,288.50 × 43,381.31
  4. Step 4: Simplify right side
    79,193.67x = 4,741,078,447.58
  5. Step 5: Solve for x
    x = 4,741,078,447.58/79,193.67
  6. Step 6: Final answer
    x = 59,866.89

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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.