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Finding the Fourth Proportional to 68,621.20, 102,802.20 and 35,227.60

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Solution

The fourth proportional to 68,621.20, 102,802.20 and 35,227.60 is: 52,774.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,621.20 : 102,802.20 = 35,227.60 : x
  2. Step 2: Convert to fraction form
    68,621.20/102,802.20 = 35,227.60/x
  3. Step 3: Cross multiply
    68,621.20x = 102,802.20 × 35,227.60
  4. Step 4: Simplify right side
    68,621.20x = 3,621,474,780.72
  5. Step 5: Solve for x
    x = 3,621,474,780.72/68,621.20
  6. Step 6: Final answer
    x = 52,774.87

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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.