Home / 54,420.17-81,651.24-21,163.68

Finding the Fourth Proportional to 54,420.17, 81,651.24 and 21,163.68

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Solution

The fourth proportional to 54,420.17, 81,651.24 and 21,163.68 is: 31,753.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,420.17 : 81,651.24 = 21,163.68 : x
  2. Step 2: Convert to fraction form
    54,420.17/81,651.24 = 21,163.68/x
  3. Step 3: Cross multiply
    54,420.17x = 81,651.24 × 21,163.68
  4. Step 4: Simplify right side
    54,420.17x = 1,728,040,714.96
  5. Step 5: Solve for x
    x = 1,728,040,714.96/54,420.17
  6. Step 6: Final answer
    x = 31,753.68

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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.