Home / 54,518.51-81,761.96-21,231.15

Finding the Fourth Proportional to 54,518.51, 81,761.96 and 21,231.15

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Solution

The fourth proportional to 54,518.51, 81,761.96 and 21,231.15 is: 31,840.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,518.51 : 81,761.96 = 21,231.15 : x
  2. Step 2: Convert to fraction form
    54,518.51/81,761.96 = 21,231.15/x
  3. Step 3: Cross multiply
    54,518.51x = 81,761.96 × 21,231.15
  4. Step 4: Simplify right side
    54,518.51x = 1,735,900,330.90
  5. Step 5: Solve for x
    x = 1,735,900,330.90/54,518.51
  6. Step 6: Final answer
    x = 31,840.57

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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.