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Finding the Fourth Proportional to 74,159.25, 111,257.75 and 21,568.71

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Solution

The fourth proportional to 74,159.25, 111,257.75 and 21,568.71 is: 32,358.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,159.25 : 111,257.75 = 21,568.71 : x
  2. Step 2: Convert to fraction form
    74,159.25/111,257.75 = 21,568.71/x
  3. Step 3: Cross multiply
    74,159.25x = 111,257.75 × 21,568.71
  4. Step 4: Simplify right side
    74,159.25x = 2,399,686,616.14
  5. Step 5: Solve for x
    x = 2,399,686,616.14/74,159.25
  6. Step 6: Final answer
    x = 32,358.56

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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.