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Finding the Fourth Proportional to 90,483.64, 124,867.74 and 50,198.20

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Solution

The fourth proportional to 90,483.64, 124,867.74 and 50,198.20 is: 69,273.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,483.64 : 124,867.74 = 50,198.20 : x
  2. Step 2: Convert to fraction form
    90,483.64/124,867.74 = 50,198.20/x
  3. Step 3: Cross multiply
    90,483.64x = 124,867.74 × 50,198.20
  4. Step 4: Simplify right side
    90,483.64x = 6,268,135,786.07
  5. Step 5: Solve for x
    x = 6,268,135,786.07/90,483.64
  6. Step 6: Final answer
    x = 69,273.69

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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.