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Finding the Fourth Proportional to 82,481.40, 123,784.29 and 60,351.87

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Solution

The fourth proportional to 82,481.40, 123,784.29 and 60,351.87 is: 90,573.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,481.40 : 123,784.29 = 60,351.87 : x
  2. Step 2: Convert to fraction form
    82,481.40/123,784.29 = 60,351.87/x
  3. Step 3: Cross multiply
    82,481.40x = 123,784.29 × 60,351.87
  4. Step 4: Simplify right side
    82,481.40x = 7,470,613,378.12
  5. Step 5: Solve for x
    x = 7,470,613,378.12/82,481.40
  6. Step 6: Final answer
    x = 90,573.31

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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.