Home / 57,212.96-78,955.75-31,721.69

Finding the Fourth Proportional to 57,212.96, 78,955.75 and 31,721.69

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Solution

The fourth proportional to 57,212.96, 78,955.75 and 31,721.69 is: 43,776.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,212.96 : 78,955.75 = 31,721.69 : x
  2. Step 2: Convert to fraction form
    57,212.96/78,955.75 = 31,721.69/x
  3. Step 3: Cross multiply
    57,212.96x = 78,955.75 × 31,721.69
  4. Step 4: Simplify right side
    57,212.96x = 2,504,610,184.20
  5. Step 5: Solve for x
    x = 2,504,610,184.20/57,212.96
  6. Step 6: Final answer
    x = 43,776.97

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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.