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Finding the Fourth Proportional to 79,412.09, 119,092.87 and 26,091.78

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Solution

The fourth proportional to 79,412.09, 119,092.87 and 26,091.78 is: 39,129.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,412.09 : 119,092.87 = 26,091.78 : x
  2. Step 2: Convert to fraction form
    79,412.09/119,092.87 = 26,091.78/x
  3. Step 3: Cross multiply
    79,412.09x = 119,092.87 × 26,091.78
  4. Step 4: Simplify right side
    79,412.09x = 3,107,344,731.11
  5. Step 5: Solve for x
    x = 3,107,344,731.11/79,412.09
  6. Step 6: Final answer
    x = 39,129.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.