Home / 71,918.82-99,243.63-39,651.66

Finding the Fourth Proportional to 71,918.82, 99,243.63 and 39,651.66

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Solution

The fourth proportional to 71,918.82, 99,243.63 and 39,651.66 is: 54,716.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,918.82 : 99,243.63 = 39,651.66 : x
  2. Step 2: Convert to fraction form
    71,918.82/99,243.63 = 39,651.66/x
  3. Step 3: Cross multiply
    71,918.82x = 99,243.63 × 39,651.66
  4. Step 4: Simplify right side
    71,918.82x = 3,935,174,673.93
  5. Step 5: Solve for x
    x = 3,935,174,673.93/71,918.82
  6. Step 6: Final answer
    x = 54,716.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.