Home / 57,190.92-78,921.36-31,698.36

Finding the Fourth Proportional to 57,190.92, 78,921.36 and 31,698.36

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Solution

The fourth proportional to 57,190.92, 78,921.36 and 31,698.36 is: 43,742.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,190.92 : 78,921.36 = 31,698.36 : x
  2. Step 2: Convert to fraction form
    57,190.92/78,921.36 = 31,698.36/x
  3. Step 3: Cross multiply
    57,190.92x = 78,921.36 × 31,698.36
  4. Step 4: Simplify right side
    57,190.92x = 2,501,677,680.97
  5. Step 5: Solve for x
    x = 2,501,677,680.97/57,190.92
  6. Step 6: Final answer
    x = 43,742.57

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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.