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Finding the Fourth Proportional to 79,866.39, 119,786.89 and 26,553.94

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Solution

The fourth proportional to 79,866.39, 119,786.89 and 26,553.94 is: 39,826.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,866.39 : 119,786.89 = 26,553.94 : x
  2. Step 2: Convert to fraction form
    79,866.39/119,786.89 = 26,553.94/x
  3. Step 3: Cross multiply
    79,866.39x = 119,786.89 × 26,553.94
  4. Step 4: Simplify right side
    79,866.39x = 3,180,813,889.85
  5. Step 5: Solve for x
    x = 3,180,813,889.85/79,866.39
  6. Step 6: Final answer
    x = 39,826.69

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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.