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Finding the Fourth Proportional to 68,869, 95,050.74 and 39,078.28

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Solution

The fourth proportional to 68,869, 95,050.74 and 39,078.28 is: 53,934.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,869 : 95,050.74 = 39,078.28 : x
  2. Step 2: Convert to fraction form
    68,869/95,050.74 = 39,078.28/x
  3. Step 3: Cross multiply
    68,869x = 95,050.74 × 39,078.28
  4. Step 4: Simplify right side
    68,869x = 3,714,419,431.93
  5. Step 5: Solve for x
    x = 3,714,419,431.93/68,869
  6. Step 6: Final answer
    x = 53,934.56

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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.