Home / 54,399.84-81,555.48-21,102.72

Finding the Fourth Proportional to 54,399.84, 81,555.48 and 21,102.72

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Solution

The fourth proportional to 54,399.84, 81,555.48 and 21,102.72 is: 31,636.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,399.84 : 81,555.48 = 21,102.72 : x
  2. Step 2: Convert to fraction form
    54,399.84/81,555.48 = 21,102.72/x
  3. Step 3: Cross multiply
    54,399.84x = 81,555.48 × 21,102.72
  4. Step 4: Simplify right side
    54,399.84x = 1,721,042,458.91
  5. Step 5: Solve for x
    x = 1,721,042,458.91/54,399.84
  6. Step 6: Final answer
    x = 31,636.90

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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.