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Finding the Fourth Proportional to 68,444, 94,452.72 and 38,636

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Solution

The fourth proportional to 68,444, 94,452.72 and 38,636 is: 53,317.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,444 : 94,452.72 = 38,636 : x
  2. Step 2: Convert to fraction form
    68,444/94,452.72 = 38,636/x
  3. Step 3: Cross multiply
    68,444x = 94,452.72 × 38,636
  4. Step 4: Simplify right side
    68,444x = 3,649,275,289.92
  5. Step 5: Solve for x
    x = 3,649,275,289.92/68,444
  6. Step 6: Final answer
    x = 53,317.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.