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Finding the Fourth Proportional to 68,822.55, 94,979.70 and 38,610

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Solution

The fourth proportional to 68,822.55, 94,979.70 and 38,610 is: 53,284.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,822.55 : 94,979.70 = 38,610 : x
  2. Step 2: Convert to fraction form
    68,822.55/94,979.70 = 38,610/x
  3. Step 3: Cross multiply
    68,822.55x = 94,979.70 × 38,610
  4. Step 4: Simplify right side
    68,822.55x = 3,667,166,217
  5. Step 5: Solve for x
    x = 3,667,166,217/68,822.55
  6. Step 6: Final answer
    x = 53,284.37

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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.