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Finding the Fourth Proportional to 65,910.89, 90,956.50 and 35,696.12

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Solution

The fourth proportional to 65,910.89, 90,956.50 and 35,696.12 is: 49,260.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,910.89 : 90,956.50 = 35,696.12 : x
  2. Step 2: Convert to fraction form
    65,910.89/90,956.50 = 35,696.12/x
  3. Step 3: Cross multiply
    65,910.89x = 90,956.50 × 35,696.12
  4. Step 4: Simplify right side
    65,910.89x = 3,246,794,138.78
  5. Step 5: Solve for x
    x = 3,246,794,138.78/65,910.89
  6. Step 6: Final answer
    x = 49,260.36

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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.