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Finding the Fourth Proportional to 68,308, 94,282.32 and 38,517.28

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Solution

The fourth proportional to 68,308, 94,282.32 and 38,517.28 is: 53,163.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,308 : 94,282.32 = 38,517.28 : x
  2. Step 2: Convert to fraction form
    68,308/94,282.32 = 38,517.28/x
  3. Step 3: Cross multiply
    68,308x = 94,282.32 × 38,517.28
  4. Step 4: Simplify right side
    68,308x = 3,631,498,518.49
  5. Step 5: Solve for x
    x = 3,631,498,518.49/68,308
  6. Step 6: Final answer
    x = 53,163.59

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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.