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Finding the Fourth Proportional to 65,909.61, 90,954.78 and 35,694.23

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Solution

The fourth proportional to 65,909.61, 90,954.78 and 35,694.23 is: 49,257.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,909.61 : 90,954.78 = 35,694.23 : x
  2. Step 2: Convert to fraction form
    65,909.61/90,954.78 = 35,694.23/x
  3. Step 3: Cross multiply
    65,909.61x = 90,954.78 × 35,694.23
  4. Step 4: Simplify right side
    65,909.61x = 3,246,560,836.92
  5. Step 5: Solve for x
    x = 3,246,560,836.92/65,909.61
  6. Step 6: Final answer
    x = 49,257.78

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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.