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Finding the Fourth Proportional to 68,764, 94,894.32 and 38,956

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Solution

The fourth proportional to 68,764, 94,894.32 and 38,956 is: 53,759.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,764 : 94,894.32 = 38,956 : x
  2. Step 2: Convert to fraction form
    68,764/94,894.32 = 38,956/x
  3. Step 3: Cross multiply
    68,764x = 94,894.32 × 38,956
  4. Step 4: Simplify right side
    68,764x = 3,696,703,129.92
  5. Step 5: Solve for x
    x = 3,696,703,129.92/68,764
  6. Step 6: Final answer
    x = 53,759.28

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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.