Home / 71,819.25-107,740.55-21,223.41

Finding the Fourth Proportional to 71,819.25, 107,740.55 and 21,223.41

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Solution

The fourth proportional to 71,819.25, 107,740.55 and 21,223.41 is: 31,838.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,819.25 : 107,740.55 = 21,223.41 : x
  2. Step 2: Convert to fraction form
    71,819.25/107,740.55 = 21,223.41/x
  3. Step 3: Cross multiply
    71,819.25x = 107,740.55 × 21,223.41
  4. Step 4: Simplify right side
    71,819.25x = 2,286,621,760.16
  5. Step 5: Solve for x
    x = 2,286,621,760.16/71,819.25
  6. Step 6: Final answer
    x = 31,838.56

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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.