Home / 54,458.80-81,693.24-21,181.39

Finding the Fourth Proportional to 54,458.80, 81,693.24 and 21,181.39

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Solution

The fourth proportional to 54,458.80, 81,693.24 and 21,181.39 is: 31,774.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,458.80 : 81,693.24 = 21,181.39 : x
  2. Step 2: Convert to fraction form
    54,458.80/81,693.24 = 21,181.39/x
  3. Step 3: Cross multiply
    54,458.80x = 81,693.24 × 21,181.39
  4. Step 4: Simplify right side
    54,458.80x = 1,730,376,518.64
  5. Step 5: Solve for x
    x = 1,730,376,518.64/54,458.80
  6. Step 6: Final answer
    x = 31,774.05

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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.