Home / 54,495.30-81,682.20-21,204.30

Finding the Fourth Proportional to 54,495.30, 81,682.20 and 21,204.30

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Solution

The fourth proportional to 54,495.30, 81,682.20 and 21,204.30 is: 31,782.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,495.30 : 81,682.20 = 21,204.30 : x
  2. Step 2: Convert to fraction form
    54,495.30/81,682.20 = 21,204.30/x
  3. Step 3: Cross multiply
    54,495.30x = 81,682.20 × 21,204.30
  4. Step 4: Simplify right side
    54,495.30x = 1,732,013,873.46
  5. Step 5: Solve for x
    x = 1,732,013,873.46/54,495.30
  6. Step 6: Final answer
    x = 31,782.81

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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.