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Finding the Fourth Proportional to 56,171.87, 84,268.84 and 18,731.44

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Solution

The fourth proportional to 56,171.87, 84,268.84 and 18,731.44 is: 28,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,171.87 : 84,268.84 = 18,731.44 : x
  2. Step 2: Convert to fraction form
    56,171.87/84,268.84 = 18,731.44/x
  3. Step 3: Cross multiply
    56,171.87x = 84,268.84 × 18,731.44
  4. Step 4: Simplify right side
    56,171.87x = 1,578,476,720.33
  5. Step 5: Solve for x
    x = 1,578,476,720.33/56,171.87
  6. Step 6: Final answer
    x = 28,100.84

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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.