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Finding the Fourth Proportional to 68,644.62, 94,718.70 and 38,431.22

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Solution

The fourth proportional to 68,644.62, 94,718.70 and 38,431.22 is: 53,028.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,644.62 : 94,718.70 = 38,431.22 : x
  2. Step 2: Convert to fraction form
    68,644.62/94,718.70 = 38,431.22/x
  3. Step 3: Cross multiply
    68,644.62x = 94,718.70 × 38,431.22
  4. Step 4: Simplify right side
    68,644.62x = 3,640,154,724.22
  5. Step 5: Solve for x
    x = 3,640,154,724.22/68,644.62
  6. Step 6: Final answer
    x = 53,028.99

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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.