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Finding the Fourth Proportional to 68,647.50, 94,745.81 and 49,839.30

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Solution

The fourth proportional to 68,647.50, 94,745.81 and 49,839.30 is: 68,787.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,647.50 : 94,745.81 = 49,839.30 : x
  2. Step 2: Convert to fraction form
    68,647.50/94,745.81 = 49,839.30/x
  3. Step 3: Cross multiply
    68,647.50x = 94,745.81 × 49,839.30
  4. Step 4: Simplify right side
    68,647.50x = 4,722,064,848.33
  5. Step 5: Solve for x
    x = 4,722,064,848.33/68,647.50
  6. Step 6: Final answer
    x = 68,787.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.