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Finding the Fourth Proportional to 68,896.56, 95,078.25 and 38,688.42

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Solution

The fourth proportional to 68,896.56, 95,078.25 and 38,688.42 is: 53,390.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,896.56 : 95,078.25 = 38,688.42 : x
  2. Step 2: Convert to fraction form
    68,896.56/95,078.25 = 38,688.42/x
  3. Step 3: Cross multiply
    68,896.56x = 95,078.25 × 38,688.42
  4. Step 4: Simplify right side
    68,896.56x = 3,678,427,268.87
  5. Step 5: Solve for x
    x = 3,678,427,268.87/68,896.56
  6. Step 6: Final answer
    x = 53,390.58

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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.