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Finding the Fourth Proportional to 90,229, 124,512.90 and 49,944.52

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Solution

The fourth proportional to 90,229, 124,512.90 and 49,944.52 is: 68,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,229 : 124,512.90 = 49,944.52 : x
  2. Step 2: Convert to fraction form
    90,229/124,512.90 = 49,944.52/x
  3. Step 3: Cross multiply
    90,229x = 124,512.90 × 49,944.52
  4. Step 4: Simplify right side
    90,229x = 6,218,737,024.31
  5. Step 5: Solve for x
    x = 6,218,737,024.31/90,229
  6. Step 6: Final answer
    x = 68,921.71

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1.5x scale

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.