Home / 68,660.39-102,991.30-33,113.48

Finding the Fourth Proportional to 68,660.39, 102,991.30 and 33,113.48

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Solution

The fourth proportional to 68,660.39, 102,991.30 and 33,113.48 is: 49,670.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,660.39 : 102,991.30 = 33,113.48 : x
  2. Step 2: Convert to fraction form
    68,660.39/102,991.30 = 33,113.48/x
  3. Step 3: Cross multiply
    68,660.39x = 102,991.30 × 33,113.48
  4. Step 4: Simplify right side
    68,660.39x = 3,410,399,754.98
  5. Step 5: Solve for x
    x = 3,410,399,754.98/68,660.39
  6. Step 6: Final answer
    x = 49,670.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.