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Finding the Fourth Proportional to 68,893.75, 103,327.03 and 18,961.03

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Solution

The fourth proportional to 68,893.75, 103,327.03 and 18,961.03 is: 28,437.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,893.75 : 103,327.03 = 18,961.03 : x
  2. Step 2: Convert to fraction form
    68,893.75/103,327.03 = 18,961.03/x
  3. Step 3: Cross multiply
    68,893.75x = 103,327.03 × 18,961.03
  4. Step 4: Simplify right side
    68,893.75x = 1,959,186,915.64
  5. Step 5: Solve for x
    x = 1,959,186,915.64/68,893.75
  6. Step 6: Final answer
    x = 28,437.80

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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.