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Finding the Fourth Proportional to 66,644.36, 99,982.36 and 19,896.02

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Solution

The fourth proportional to 66,644.36, 99,982.36 and 19,896.02 is: 29,848.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,644.36 : 99,982.36 = 19,896.02 : x
  2. Step 2: Convert to fraction form
    66,644.36/99,982.36 = 19,896.02/x
  3. Step 3: Cross multiply
    66,644.36x = 99,982.36 × 19,896.02
  4. Step 4: Simplify right side
    66,644.36x = 1,989,251,034.21
  5. Step 5: Solve for x
    x = 1,989,251,034.21/66,644.36
  6. Step 6: Final answer
    x = 29,848.75

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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.