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Finding the Fourth Proportional to 68,797.92, 94,935.60 and 38,172

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Solution

The fourth proportional to 68,797.92, 94,935.60 and 38,172 is: 52,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,797.92 : 94,935.60 = 38,172 : x
  2. Step 2: Convert to fraction form
    68,797.92/94,935.60 = 38,172/x
  3. Step 3: Cross multiply
    68,797.92x = 94,935.60 × 38,172
  4. Step 4: Simplify right side
    68,797.92x = 3,623,881,723.20
  5. Step 5: Solve for x
    x = 3,623,881,723.20/68,797.92
  6. Step 6: Final answer
    x = 52,674.29

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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.