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Finding the Fourth Proportional to 68,805.96, 94,943.04 and 38,178.60

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Solution

The fourth proportional to 68,805.96, 94,943.04 and 38,178.60 is: 52,681.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,805.96 : 94,943.04 = 38,178.60 : x
  2. Step 2: Convert to fraction form
    68,805.96/94,943.04 = 38,178.60/x
  3. Step 3: Cross multiply
    68,805.96x = 94,943.04 × 38,178.60
  4. Step 4: Simplify right side
    68,805.96x = 3,624,792,346.94
  5. Step 5: Solve for x
    x = 3,624,792,346.94/68,805.96
  6. Step 6: Final answer
    x = 52,681.37

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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.