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Finding the Fourth Proportional to 68,753.75, 103,161.15 and 43,787.34

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Solution

The fourth proportional to 68,753.75, 103,161.15 and 43,787.34 is: 65,700.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,753.75 : 103,161.15 = 43,787.34 : x
  2. Step 2: Convert to fraction form
    68,753.75/103,161.15 = 43,787.34/x
  3. Step 3: Cross multiply
    68,753.75x = 103,161.15 × 43,787.34
  4. Step 4: Simplify right side
    68,753.75x = 4,517,152,349.84
  5. Step 5: Solve for x
    x = 4,517,152,349.84/68,753.75
  6. Step 6: Final answer
    x = 65,700.46

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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.