Home / 89,731.50-123,832.03-49,990.06

Finding the Fourth Proportional to 89,731.50, 123,832.03 and 49,990.06

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Solution

The fourth proportional to 89,731.50, 123,832.03 and 49,990.06 is: 68,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,731.50 : 123,832.03 = 49,990.06 : x
  2. Step 2: Convert to fraction form
    89,731.50/123,832.03 = 49,990.06/x
  3. Step 3: Cross multiply
    89,731.50x = 123,832.03 × 49,990.06
  4. Step 4: Simplify right side
    89,731.50x = 6,190,370,609.62
  5. Step 5: Solve for x
    x = 6,190,370,609.62/89,731.50
  6. Step 6: Final answer
    x = 68,987.71

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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.