Home / 57,181.60-78,908.46-31,687.31

Finding the Fourth Proportional to 57,181.60, 78,908.46 and 31,687.31

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Solution

The fourth proportional to 57,181.60, 78,908.46 and 31,687.31 is: 43,727.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,181.60 : 78,908.46 = 31,687.31 : x
  2. Step 2: Convert to fraction form
    57,181.60/78,908.46 = 31,687.31/x
  3. Step 3: Cross multiply
    57,181.60x = 78,908.46 × 31,687.31
  4. Step 4: Simplify right side
    57,181.60x = 2,500,396,646.47
  5. Step 5: Solve for x
    x = 2,500,396,646.47/57,181.60
  6. Step 6: Final answer
    x = 43,727.29

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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.