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Finding the Fourth Proportional to 91,259.65, 125,936.97 and 50,974

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Solution

The fourth proportional to 91,259.65, 125,936.97 and 50,974 is: 70,343.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,259.65 : 125,936.97 = 50,974 : x
  2. Step 2: Convert to fraction form
    91,259.65/125,936.97 = 50,974/x
  3. Step 3: Cross multiply
    91,259.65x = 125,936.97 × 50,974
  4. Step 4: Simplify right side
    91,259.65x = 6,419,511,108.78
  5. Step 5: Solve for x
    x = 6,419,511,108.78/91,259.65
  6. Step 6: Final answer
    x = 70,343.37

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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.