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Finding the Fourth Proportional to 85,449.22, 128,201.50 and 41,079.43

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Solution

The fourth proportional to 85,449.22, 128,201.50 and 41,079.43 is: 61,632.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,449.22 : 128,201.50 = 41,079.43 : x
  2. Step 2: Convert to fraction form
    85,449.22/128,201.50 = 41,079.43/x
  3. Step 3: Cross multiply
    85,449.22x = 128,201.50 × 41,079.43
  4. Step 4: Simplify right side
    85,449.22x = 5,266,444,545.15
  5. Step 5: Solve for x
    x = 5,266,444,545.15/85,449.22
  6. Step 6: Final answer
    x = 61,632.45

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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.