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Finding the Fourth Proportional to 68,804.01, 103,206.11 and 18,884.79

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Solution

The fourth proportional to 68,804.01, 103,206.11 and 18,884.79 is: 28,327.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,804.01 : 103,206.11 = 18,884.79 : x
  2. Step 2: Convert to fraction form
    68,804.01/103,206.11 = 18,884.79/x
  3. Step 3: Cross multiply
    68,804.01x = 103,206.11 × 18,884.79
  4. Step 4: Simplify right side
    68,804.01x = 1,949,025,619.64
  5. Step 5: Solve for x
    x = 1,949,025,619.64/68,804.01
  6. Step 6: Final answer
    x = 28,327.21

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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.