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Finding the Fourth Proportional to 45,659.44, 68,469.72 and 17,938

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Solution

The fourth proportional to 45,659.44, 68,469.72 and 17,938 is: 26,899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,659.44 : 68,469.72 = 17,938 : x
  2. Step 2: Convert to fraction form
    45,659.44/68,469.72 = 17,938/x
  3. Step 3: Cross multiply
    45,659.44x = 68,469.72 × 17,938
  4. Step 4: Simplify right side
    45,659.44x = 1,228,209,837.36
  5. Step 5: Solve for x
    x = 1,228,209,837.36/45,659.44
  6. Step 6: Final answer
    x = 26,899.36

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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.