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Finding the Fourth Proportional to 68,067.92, 93,919.95 and 39,768.14

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Solution

The fourth proportional to 68,067.92, 93,919.95 and 39,768.14 is: 54,871.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,067.92 : 93,919.95 = 39,768.14 : x
  2. Step 2: Convert to fraction form
    68,067.92/93,919.95 = 39,768.14/x
  3. Step 3: Cross multiply
    68,067.92x = 93,919.95 × 39,768.14
  4. Step 4: Simplify right side
    68,067.92x = 3,735,021,720.39
  5. Step 5: Solve for x
    x = 3,735,021,720.39/68,067.92
  6. Step 6: Final answer
    x = 54,871.98

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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.