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Finding the Fourth Proportional to 66,840.39, 100,282.92 and 21,863.79

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Solution

The fourth proportional to 66,840.39, 100,282.92 and 21,863.79 is: 32,803.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,840.39 : 100,282.92 = 21,863.79 : x
  2. Step 2: Convert to fraction form
    66,840.39/100,282.92 = 21,863.79/x
  3. Step 3: Cross multiply
    66,840.39x = 100,282.92 × 21,863.79
  4. Step 4: Simplify right side
    66,840.39x = 2,192,564,917.56
  5. Step 5: Solve for x
    x = 2,192,564,917.56/66,840.39
  6. Step 6: Final answer
    x = 32,803.00

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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.