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Finding the Fourth Proportional to 68,415.35, 102,608.37 and 39,933.32

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Solution

The fourth proportional to 68,415.35, 102,608.37 and 39,933.32 is: 59,891.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,415.35 : 102,608.37 = 39,933.32 : x
  2. Step 2: Convert to fraction form
    68,415.35/102,608.37 = 39,933.32/x
  3. Step 3: Cross multiply
    68,415.35x = 102,608.37 × 39,933.32
  4. Step 4: Simplify right side
    68,415.35x = 4,097,492,360.85
  5. Step 5: Solve for x
    x = 4,097,492,360.85/68,415.35
  6. Step 6: Final answer
    x = 59,891.42

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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.