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Finding the Fourth Proportional to 68,019.49, 102,046.53 and 39,963.25

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Solution

The fourth proportional to 68,019.49, 102,046.53 and 39,963.25 is: 59,955.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,019.49 : 102,046.53 = 39,963.25 : x
  2. Step 2: Convert to fraction form
    68,019.49/102,046.53 = 39,963.25/x
  3. Step 3: Cross multiply
    68,019.49x = 102,046.53 × 39,963.25
  4. Step 4: Simplify right side
    68,019.49x = 4,078,110,790.21
  5. Step 5: Solve for x
    x = 4,078,110,790.21/68,019.49
  6. Step 6: Final answer
    x = 59,955.03

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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.