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Finding the Fourth Proportional to 85,246.41, 127,906.49 and 45,757.42

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Solution

The fourth proportional to 85,246.41, 127,906.49 and 45,757.42 is: 68,655.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,246.41 : 127,906.49 = 45,757.42 : x
  2. Step 2: Convert to fraction form
    85,246.41/127,906.49 = 45,757.42/x
  3. Step 3: Cross multiply
    85,246.41x = 127,906.49 × 45,757.42
  4. Step 4: Simplify right side
    85,246.41x = 5,852,670,754.87
  5. Step 5: Solve for x
    x = 5,852,670,754.87/85,246.41
  6. Step 6: Final answer
    x = 68,655.92

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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.