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Finding the Fourth Proportional to 65,622.24, 98,449 and 21,249

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Solution

The fourth proportional to 65,622.24, 98,449 and 21,249 is: 31,878.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,622.24 : 98,449 = 21,249 : x
  2. Step 2: Convert to fraction form
    65,622.24/98,449 = 21,249/x
  3. Step 3: Cross multiply
    65,622.24x = 98,449 × 21,249
  4. Step 4: Simplify right side
    65,622.24x = 2,091,942,801
  5. Step 5: Solve for x
    x = 2,091,942,801/65,622.24
  6. Step 6: Final answer
    x = 31,878.56

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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.