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Finding the Fourth Proportional to 68,446, 94,455.48 and 38,638

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Solution

The fourth proportional to 68,446, 94,455.48 and 38,638 is: 53,320.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,446 : 94,455.48 = 38,638 : x
  2. Step 2: Convert to fraction form
    68,446/94,455.48 = 38,638/x
  3. Step 3: Cross multiply
    68,446x = 94,455.48 × 38,638
  4. Step 4: Simplify right side
    68,446x = 3,649,570,836.24
  5. Step 5: Solve for x
    x = 3,649,570,836.24/68,446
  6. Step 6: Final answer
    x = 53,320.44

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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.