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Finding the Fourth Proportional to 90,049.62, 124,262.28 and 49,763

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Solution

The fourth proportional to 90,049.62, 124,262.28 and 49,763 is: 68,669.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,049.62 : 124,262.28 = 49,763 : x
  2. Step 2: Convert to fraction form
    90,049.62/124,262.28 = 49,763/x
  3. Step 3: Cross multiply
    90,049.62x = 124,262.28 × 49,763
  4. Step 4: Simplify right side
    90,049.62x = 6,183,663,839.64
  5. Step 5: Solve for x
    x = 6,183,663,839.64/90,049.62
  6. Step 6: Final answer
    x = 68,669.52

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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.