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Finding the Fourth Proportional to 69,843.93, 104,782.16 and 19,924.71

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Solution

The fourth proportional to 69,843.93, 104,782.16 and 19,924.71 is: 29,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,843.93 : 104,782.16 = 19,924.71 : x
  2. Step 2: Convert to fraction form
    69,843.93/104,782.16 = 19,924.71/x
  3. Step 3: Cross multiply
    69,843.93x = 104,782.16 × 19,924.71
  4. Step 4: Simplify right side
    69,843.93x = 2,087,754,151.17
  5. Step 5: Solve for x
    x = 2,087,754,151.17/69,843.93
  6. Step 6: Final answer
    x = 29,891.70

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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.