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Finding the Fourth Proportional to 61,204.72, 91,808.09 and 21,224.97

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Solution

The fourth proportional to 61,204.72, 91,808.09 and 21,224.97 is: 31,837.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,204.72 : 91,808.09 = 21,224.97 : x
  2. Step 2: Convert to fraction form
    61,204.72/91,808.09 = 21,224.97/x
  3. Step 3: Cross multiply
    61,204.72x = 91,808.09 × 21,224.97
  4. Step 4: Simplify right side
    61,204.72x = 1,948,623,956.01
  5. Step 5: Solve for x
    x = 1,948,623,956.01/61,204.72
  6. Step 6: Final answer
    x = 31,837.81

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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.