Home / 89,619.21-123,669.59-49,331.43

Finding the Fourth Proportional to 89,619.21, 123,669.59 and 49,331.43

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Solution

The fourth proportional to 89,619.21, 123,669.59 and 49,331.43 is: 68,074.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,619.21 : 123,669.59 = 49,331.43 : x
  2. Step 2: Convert to fraction form
    89,619.21/123,669.59 = 49,331.43/x
  3. Step 3: Cross multiply
    89,619.21x = 123,669.59 × 49,331.43
  4. Step 4: Simplify right side
    89,619.21x = 6,100,797,475.56
  5. Step 5: Solve for x
    x = 6,100,797,475.56/89,619.21
  6. Step 6: Final answer
    x = 68,074.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.