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Finding the Fourth Proportional to 55,016.48, 82,552 and 21,760.40

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Solution

The fourth proportional to 55,016.48, 82,552 and 21,760.40 is: 32,651.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,016.48 : 82,552 = 21,760.40 : x
  2. Step 2: Convert to fraction form
    55,016.48/82,552 = 21,760.40/x
  3. Step 3: Cross multiply
    55,016.48x = 82,552 × 21,760.40
  4. Step 4: Simplify right side
    55,016.48x = 1,796,364,540.80
  5. Step 5: Solve for x
    x = 1,796,364,540.80/55,016.48
  6. Step 6: Final answer
    x = 32,651.39

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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.