Home / 74,039.01-111,032.52-20,716.66

Finding the Fourth Proportional to 74,039.01, 111,032.52 and 20,716.66

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Solution

The fourth proportional to 74,039.01, 111,032.52 and 20,716.66 is: 31,067.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,039.01 : 111,032.52 = 20,716.66 : x
  2. Step 2: Convert to fraction form
    74,039.01/111,032.52 = 20,716.66/x
  3. Step 3: Cross multiply
    74,039.01x = 111,032.52 × 20,716.66
  4. Step 4: Simplify right side
    74,039.01x = 2,300,222,965.78
  5. Step 5: Solve for x
    x = 2,300,222,965.78/74,039.01
  6. Step 6: Final answer
    x = 31,067.72

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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.