Home / 54,508.51-81,746.96-21,221.15

Finding the Fourth Proportional to 54,508.51, 81,746.96 and 21,221.15

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Solution

The fourth proportional to 54,508.51, 81,746.96 and 21,221.15 is: 31,825.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,508.51 : 81,746.96 = 21,221.15 : x
  2. Step 2: Convert to fraction form
    54,508.51/81,746.96 = 21,221.15/x
  3. Step 3: Cross multiply
    54,508.51x = 81,746.96 × 21,221.15
  4. Step 4: Simplify right side
    54,508.51x = 1,734,764,500.20
  5. Step 5: Solve for x
    x = 1,734,764,500.20/54,508.51
  6. Step 6: Final answer
    x = 31,825.57

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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.