Home / 54,386.30-81,639.06-43,213.47

Finding the Fourth Proportional to 54,386.30, 81,639.06 and 43,213.47

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Solution

The fourth proportional to 54,386.30, 81,639.06 and 43,213.47 is: 64,867.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,386.30 : 81,639.06 = 43,213.47 : x
  2. Step 2: Convert to fraction form
    54,386.30/81,639.06 = 43,213.47/x
  3. Step 3: Cross multiply
    54,386.30x = 81,639.06 × 43,213.47
  4. Step 4: Simplify right side
    54,386.30x = 3,527,906,601.94
  5. Step 5: Solve for x
    x = 3,527,906,601.94/54,386.30
  6. Step 6: Final answer
    x = 64,867.56

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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.