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Finding the Fourth Proportional to 66,888.43, 100,324.44 and 38,823.75

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Solution

The fourth proportional to 66,888.43, 100,324.44 and 38,823.75 is: 58,230.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,888.43 : 100,324.44 = 38,823.75 : x
  2. Step 2: Convert to fraction form
    66,888.43/100,324.44 = 38,823.75/x
  3. Step 3: Cross multiply
    66,888.43x = 100,324.44 × 38,823.75
  4. Step 4: Simplify right side
    66,888.43x = 3,894,970,977.45
  5. Step 5: Solve for x
    x = 3,894,970,977.45/66,888.43
  6. Step 6: Final answer
    x = 58,230.86

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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.