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Finding the Fourth Proportional to 85,274.88, 127,912.56 and 29,857.92

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Solution

The fourth proportional to 85,274.88, 127,912.56 and 29,857.92 is: 44,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,274.88 : 127,912.56 = 29,857.92 : x
  2. Step 2: Convert to fraction form
    85,274.88/127,912.56 = 29,857.92/x
  3. Step 3: Cross multiply
    85,274.88x = 127,912.56 × 29,857.92
  4. Step 4: Simplify right side
    85,274.88x = 3,819,202,983.48
  5. Step 5: Solve for x
    x = 3,819,202,983.48/85,274.88
  6. Step 6: Final answer
    x = 44,786.96

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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.