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Finding the Fourth Proportional to 90,066.87, 135,079.74 and 33,912.90

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Solution

The fourth proportional to 90,066.87, 135,079.74 and 33,912.90 is: 50,861.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,066.87 : 135,079.74 = 33,912.90 : x
  2. Step 2: Convert to fraction form
    90,066.87/135,079.74 = 33,912.90/x
  3. Step 3: Cross multiply
    90,066.87x = 135,079.74 × 33,912.90
  4. Step 4: Simplify right side
    90,066.87x = 4,580,945,714.65
  5. Step 5: Solve for x
    x = 4,580,945,714.65/90,066.87
  6. Step 6: Final answer
    x = 50,861.61

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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.