Home / 47,491.38-71,210.74-19,431.12

Finding the Fourth Proportional to 47,491.38, 71,210.74 and 19,431.12

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Solution

The fourth proportional to 47,491.38, 71,210.74 and 19,431.12 is: 29,135.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,491.38 : 71,210.74 = 19,431.12 : x
  2. Step 2: Convert to fraction form
    47,491.38/71,210.74 = 19,431.12/x
  3. Step 3: Cross multiply
    47,491.38x = 71,210.74 × 19,431.12
  4. Step 4: Simplify right side
    47,491.38x = 1,383,704,385.65
  5. Step 5: Solve for x
    x = 1,383,704,385.65/47,491.38
  6. Step 6: Final answer
    x = 29,135.91

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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.