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Finding the Fourth Proportional to 90,908.54, 136,370.69 and 27,742.88

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Solution

The fourth proportional to 90,908.54, 136,370.69 and 27,742.88 is: 41,616.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,908.54 : 136,370.69 = 27,742.88 : x
  2. Step 2: Convert to fraction form
    90,908.54/136,370.69 = 27,742.88/x
  3. Step 3: Cross multiply
    90,908.54x = 136,370.69 × 27,742.88
  4. Step 4: Simplify right side
    90,908.54x = 3,783,315,994.44
  5. Step 5: Solve for x
    x = 3,783,315,994.44/90,908.54
  6. Step 6: Final answer
    x = 41,616.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.