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Finding the Fourth Proportional to 65,469.33, 98,213.49 and 21,081.33

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Solution

The fourth proportional to 65,469.33, 98,213.49 and 21,081.33 is: 31,625.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,469.33 : 98,213.49 = 21,081.33 : x
  2. Step 2: Convert to fraction form
    65,469.33/98,213.49 = 21,081.33/x
  3. Step 3: Cross multiply
    65,469.33x = 98,213.49 × 21,081.33
  4. Step 4: Simplify right side
    65,469.33x = 2,070,470,993.14
  5. Step 5: Solve for x
    x = 2,070,470,993.14/65,469.33
  6. Step 6: Final answer
    x = 31,625.05

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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.