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Finding the Fourth Proportional to 90,050, 124,269 and 50,306

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Solution

The fourth proportional to 90,050, 124,269 and 50,306 is: 69,422.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,050 : 124,269 = 50,306 : x
  2. Step 2: Convert to fraction form
    90,050/124,269 = 50,306/x
  3. Step 3: Cross multiply
    90,050x = 124,269 × 50,306
  4. Step 4: Simplify right side
    90,050x = 6,251,476,314
  5. Step 5: Solve for x
    x = 6,251,476,314/90,050
  6. Step 6: Final answer
    x = 69,422.28

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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.