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Finding the Fourth Proportional to 51,761.84, 77,659.16 and 18,481.16

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Solution

The fourth proportional to 51,761.84, 77,659.16 and 18,481.16 is: 27,727.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,761.84 : 77,659.16 = 18,481.16 : x
  2. Step 2: Convert to fraction form
    51,761.84/77,659.16 = 18,481.16/x
  3. Step 3: Cross multiply
    51,761.84x = 77,659.16 × 18,481.16
  4. Step 4: Simplify right side
    51,761.84x = 1,435,231,361.43
  5. Step 5: Solve for x
    x = 1,435,231,361.43/51,761.84
  6. Step 6: Final answer
    x = 27,727.60

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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.