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Finding the Fourth Proportional to 61,310.49, 91,972.94 and 21,873.21

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Solution

The fourth proportional to 61,310.49, 91,972.94 and 21,873.21 is: 32,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,310.49 : 91,972.94 = 21,873.21 : x
  2. Step 2: Convert to fraction form
    61,310.49/91,972.94 = 21,873.21/x
  3. Step 3: Cross multiply
    61,310.49x = 91,972.94 × 21,873.21
  4. Step 4: Simplify right side
    61,310.49x = 2,011,743,321.57
  5. Step 5: Solve for x
    x = 2,011,743,321.57/61,310.49
  6. Step 6: Final answer
    x = 32,812.38

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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.