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Finding the Fourth Proportional to 90,311.64, 135,467.46 and 37,692.42

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Solution

The fourth proportional to 90,311.64, 135,467.46 and 37,692.42 is: 56,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,311.64 : 135,467.46 = 37,692.42 : x
  2. Step 2: Convert to fraction form
    90,311.64/135,467.46 = 37,692.42/x
  3. Step 3: Cross multiply
    90,311.64x = 135,467.46 × 37,692.42
  4. Step 4: Simplify right side
    90,311.64x = 5,106,096,398.65
  5. Step 5: Solve for x
    x = 5,106,096,398.65/90,311.64
  6. Step 6: Final answer
    x = 56,538.63

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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.