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Finding the Fourth Proportional to 79,930.50, 119,869.79 and 26,608.15

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Solution

The fourth proportional to 79,930.50, 119,869.79 and 26,608.15 is: 39,903.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,930.50 : 119,869.79 = 26,608.15 : x
  2. Step 2: Convert to fraction form
    79,930.50/119,869.79 = 26,608.15/x
  3. Step 3: Cross multiply
    79,930.50x = 119,869.79 × 26,608.15
  4. Step 4: Simplify right side
    79,930.50x = 3,189,513,585.94
  5. Step 5: Solve for x
    x = 3,189,513,585.94/79,930.50
  6. Step 6: Final answer
    x = 39,903.59

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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.