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Finding the Fourth Proportional to 68,093.84, 101,958.84 and 39,990.80

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Solution

The fourth proportional to 68,093.84, 101,958.84 and 39,990.80 is: 59,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,093.84 : 101,958.84 = 39,990.80 : x
  2. Step 2: Convert to fraction form
    68,093.84/101,958.84 = 39,990.80/x
  3. Step 3: Cross multiply
    68,093.84x = 101,958.84 × 39,990.80
  4. Step 4: Simplify right side
    68,093.84x = 4,077,415,578.67
  5. Step 5: Solve for x
    x = 4,077,415,578.67/68,093.84
  6. Step 6: Final answer
    x = 59,879.36

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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.