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Finding the Fourth Proportional to 64,422.25, 88,912.43 and 39,286.33

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Solution

The fourth proportional to 64,422.25, 88,912.43 and 39,286.33 is: 54,221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,422.25 : 88,912.43 = 39,286.33 : x
  2. Step 2: Convert to fraction form
    64,422.25/88,912.43 = 39,286.33/x
  3. Step 3: Cross multiply
    64,422.25x = 88,912.43 × 39,286.33
  4. Step 4: Simplify right side
    64,422.25x = 3,493,042,869.65
  5. Step 5: Solve for x
    x = 3,493,042,869.65/64,422.25
  6. Step 6: Final answer
    x = 54,221.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.