Home / 54,387.31-81,640.56-43,214.47

Finding the Fourth Proportional to 54,387.31, 81,640.56 and 43,214.47

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Solution

The fourth proportional to 54,387.31, 81,640.56 and 43,214.47 is: 64,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,387.31 : 81,640.56 = 43,214.47 : x
  2. Step 2: Convert to fraction form
    54,387.31/81,640.56 = 43,214.47/x
  3. Step 3: Cross multiply
    54,387.31x = 81,640.56 × 43,214.47
  4. Step 4: Simplify right side
    54,387.31x = 3,528,052,906.63
  5. Step 5: Solve for x
    x = 3,528,052,906.63/54,387.31
  6. Step 6: Final answer
    x = 64,869.05

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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.