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Finding the Fourth Proportional to 68,201.79, 102,300.96 and 18,281.82

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Solution

The fourth proportional to 68,201.79, 102,300.96 and 18,281.82 is: 27,422.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,201.79 : 102,300.96 = 18,281.82 : x
  2. Step 2: Convert to fraction form
    68,201.79/102,300.96 = 18,281.82/x
  3. Step 3: Cross multiply
    68,201.79x = 102,300.96 × 18,281.82
  4. Step 4: Simplify right side
    68,201.79x = 1,870,247,736.55
  5. Step 5: Solve for x
    x = 1,870,247,736.55/68,201.79
  6. Step 6: Final answer
    x = 27,422.27

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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.