Home / 54,641.31-81,982.61-21,385.14

Finding the Fourth Proportional to 54,641.31, 81,982.61 and 21,385.14

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Solution

The fourth proportional to 54,641.31, 81,982.61 and 21,385.14 is: 32,085.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,641.31 : 81,982.61 = 21,385.14 : x
  2. Step 2: Convert to fraction form
    54,641.31/81,982.61 = 21,385.14/x
  3. Step 3: Cross multiply
    54,641.31x = 81,982.61 × 21,385.14
  4. Step 4: Simplify right side
    54,641.31x = 1,753,209,592.42
  5. Step 5: Solve for x
    x = 1,753,209,592.42/54,641.31
  6. Step 6: Final answer
    x = 32,085.79

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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.