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Finding the Fourth Proportional to 68,801.38, 94,949.74 and 51,775

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Solution

The fourth proportional to 68,801.38, 94,949.74 and 51,775 is: 71,452.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,801.38 : 94,949.74 = 51,775 : x
  2. Step 2: Convert to fraction form
    68,801.38/94,949.74 = 51,775/x
  3. Step 3: Cross multiply
    68,801.38x = 94,949.74 × 51,775
  4. Step 4: Simplify right side
    68,801.38x = 4,916,022,788.50
  5. Step 5: Solve for x
    x = 4,916,022,788.50/68,801.38
  6. Step 6: Final answer
    x = 71,452.39

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1.5x scale

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.