Home / 56,940.31-78,577.68-31,789.81

Finding the Fourth Proportional to 56,940.31, 78,577.68 and 31,789.81

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Solution

The fourth proportional to 56,940.31, 78,577.68 and 31,789.81 is: 43,869.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,940.31 : 78,577.68 = 31,789.81 : x
  2. Step 2: Convert to fraction form
    56,940.31/78,577.68 = 31,789.81/x
  3. Step 3: Cross multiply
    56,940.31x = 78,577.68 × 31,789.81
  4. Step 4: Simplify right side
    56,940.31x = 2,497,969,517.44
  5. Step 5: Solve for x
    x = 2,497,969,517.44/56,940.31
  6. Step 6: Final answer
    x = 43,869.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.