Home / 43,320.38-64,942.59-20,819.80

Finding the Fourth Proportional to 43,320.38, 64,942.59 and 20,819.80

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Solution

The fourth proportional to 43,320.38, 64,942.59 and 20,819.80 is: 31,211.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,320.38 : 64,942.59 = 20,819.80 : x
  2. Step 2: Convert to fraction form
    43,320.38/64,942.59 = 20,819.80/x
  3. Step 3: Cross multiply
    43,320.38x = 64,942.59 × 20,819.80
  4. Step 4: Simplify right side
    43,320.38x = 1,352,091,410.57
  5. Step 5: Solve for x
    x = 1,352,091,410.57/43,320.38
  6. Step 6: Final answer
    x = 31,211.44

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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.