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Finding the Fourth Proportional to 79,837.84, 119,758.92 and 19,863.90

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Solution

The fourth proportional to 79,837.84, 119,758.92 and 19,863.90 is: 29,796.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,837.84 : 119,758.92 = 19,863.90 : x
  2. Step 2: Convert to fraction form
    79,837.84/119,758.92 = 19,863.90/x
  3. Step 3: Cross multiply
    79,837.84x = 119,758.92 × 19,863.90
  4. Step 4: Simplify right side
    79,837.84x = 2,378,879,210.99
  5. Step 5: Solve for x
    x = 2,378,879,210.99/79,837.84
  6. Step 6: Final answer
    x = 29,796.39

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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.