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Finding the Fourth Proportional to 79,486.80, 119,156.09 and 26,859.48

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Solution

The fourth proportional to 79,486.80, 119,156.09 and 26,859.48 is: 40,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,486.80 : 119,156.09 = 26,859.48 : x
  2. Step 2: Convert to fraction form
    79,486.80/119,156.09 = 26,859.48/x
  3. Step 3: Cross multiply
    79,486.80x = 119,156.09 × 26,859.48
  4. Step 4: Simplify right side
    79,486.80x = 3,200,470,481.94
  5. Step 5: Solve for x
    x = 3,200,470,481.94/79,486.80
  6. Step 6: Final answer
    x = 40,264.18

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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.