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Finding the Fourth Proportional to 66,963.56, 100,446.30 and 31,906.92

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Solution

The fourth proportional to 66,963.56, 100,446.30 and 31,906.92 is: 47,860.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,963.56 : 100,446.30 = 31,906.92 : x
  2. Step 2: Convert to fraction form
    66,963.56/100,446.30 = 31,906.92/x
  3. Step 3: Cross multiply
    66,963.56x = 100,446.30 × 31,906.92
  4. Step 4: Simplify right side
    66,963.56x = 3,204,932,058.40
  5. Step 5: Solve for x
    x = 3,204,932,058.40/66,963.56
  6. Step 6: Final answer
    x = 47,860.84

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1.5x scale

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.