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Finding the Fourth Proportional to 69,997.56, 104,974.82 and 20,064.28

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Solution

The fourth proportional to 69,997.56, 104,974.82 and 20,064.28 is: 30,090.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,997.56 : 104,974.82 = 20,064.28 : x
  2. Step 2: Convert to fraction form
    69,997.56/104,974.82 = 20,064.28/x
  3. Step 3: Cross multiply
    69,997.56x = 104,974.82 × 20,064.28
  4. Step 4: Simplify right side
    69,997.56x = 2,106,244,181.43
  5. Step 5: Solve for x
    x = 2,106,244,181.43/69,997.56
  6. Step 6: Final answer
    x = 30,090.25

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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.