Home / 71,455.38-107,187.12-21,542.37

Finding the Fourth Proportional to 71,455.38, 107,187.12 and 21,542.37

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Solution

The fourth proportional to 71,455.38, 107,187.12 and 21,542.37 is: 32,314.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,455.38 : 107,187.12 = 21,542.37 : x
  2. Step 2: Convert to fraction form
    71,455.38/107,187.12 = 21,542.37/x
  3. Step 3: Cross multiply
    71,455.38x = 107,187.12 × 21,542.37
  4. Step 4: Simplify right side
    71,455.38x = 2,309,064,598.27
  5. Step 5: Solve for x
    x = 2,309,064,598.27/71,455.38
  6. Step 6: Final answer
    x = 32,314.78

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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.