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Finding the Fourth Proportional to 68,978.25, 103,492.35 and 33,942.51

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Solution

The fourth proportional to 68,978.25, 103,492.35 and 33,942.51 is: 50,926.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,978.25 : 103,492.35 = 33,942.51 : x
  2. Step 2: Convert to fraction form
    68,978.25/103,492.35 = 33,942.51/x
  3. Step 3: Cross multiply
    68,978.25x = 103,492.35 × 33,942.51
  4. Step 4: Simplify right side
    68,978.25x = 3,512,790,124.80
  5. Step 5: Solve for x
    x = 3,512,790,124.80/68,978.25
  6. Step 6: Final answer
    x = 50,926.05

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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.