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Finding the Fourth Proportional to 69,843.68, 104,781.78 and 19,924.46

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Solution

The fourth proportional to 69,843.68, 104,781.78 and 19,924.46 is: 29,891.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,843.68 : 104,781.78 = 19,924.46 : x
  2. Step 2: Convert to fraction form
    69,843.68/104,781.78 = 19,924.46/x
  3. Step 3: Cross multiply
    69,843.68x = 104,781.78 × 19,924.46
  4. Step 4: Simplify right side
    69,843.68x = 2,087,719,860.43
  5. Step 5: Solve for x
    x = 2,087,719,860.43/69,843.68
  6. Step 6: Final answer
    x = 29,891.32

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1.5x scale

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.