Home / 82,431.20-123,605.40-40,314.44

Finding the Fourth Proportional to 82,431.20, 123,605.40 and 40,314.44

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Solution

The fourth proportional to 82,431.20, 123,605.40 and 40,314.44 is: 60,451.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,431.20 : 123,605.40 = 40,314.44 : x
  2. Step 2: Convert to fraction form
    82,431.20/123,605.40 = 40,314.44/x
  3. Step 3: Cross multiply
    82,431.20x = 123,605.40 × 40,314.44
  4. Step 4: Simplify right side
    82,431.20x = 4,983,082,481.98
  5. Step 5: Solve for x
    x = 4,983,082,481.98/82,431.20
  6. Step 6: Final answer
    x = 60,451.41

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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.