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Finding the Fourth Proportional to 90,226.20, 135,080.10 and 55,234.20

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Solution

The fourth proportional to 90,226.20, 135,080.10 and 55,234.20 is: 82,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,226.20 : 135,080.10 = 55,234.20 : x
  2. Step 2: Convert to fraction form
    90,226.20/135,080.10 = 55,234.20/x
  3. Step 3: Cross multiply
    90,226.20x = 135,080.10 × 55,234.20
  4. Step 4: Simplify right side
    90,226.20x = 7,461,041,259.42
  5. Step 5: Solve for x
    x = 7,461,041,259.42/90,226.20
  6. Step 6: Final answer
    x = 82,692.62

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