Home / 57,645.20-86,500.20-31,351.79

Finding the Fourth Proportional to 57,645.20, 86,500.20 and 31,351.79

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Solution

The fourth proportional to 57,645.20, 86,500.20 and 31,351.79 is: 47,045.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,645.20 : 86,500.20 = 31,351.79 : x
  2. Step 2: Convert to fraction form
    57,645.20/86,500.20 = 31,351.79/x
  3. Step 3: Cross multiply
    57,645.20x = 86,500.20 × 31,351.79
  4. Step 4: Simplify right side
    57,645.20x = 2,711,936,105.36
  5. Step 5: Solve for x
    x = 2,711,936,105.36/57,645.20
  6. Step 6: Final answer
    x = 47,045.31

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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.