Home / 54,458.90-81,693.38-21,181.49

Finding the Fourth Proportional to 54,458.90, 81,693.38 and 21,181.49

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Solution

The fourth proportional to 54,458.90, 81,693.38 and 21,181.49 is: 31,774.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,458.90 : 81,693.38 = 21,181.49 : x
  2. Step 2: Convert to fraction form
    54,458.90/81,693.38 = 21,181.49/x
  3. Step 3: Cross multiply
    54,458.90x = 81,693.38 × 21,181.49
  4. Step 4: Simplify right side
    54,458.90x = 1,730,387,156.02
  5. Step 5: Solve for x
    x = 1,730,387,156.02/54,458.90
  6. Step 6: Final answer
    x = 31,774.19

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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.