Home / 72,933.21-109,418.27-20,342.66

Finding the Fourth Proportional to 72,933.21, 109,418.27 and 20,342.66

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Solution

The fourth proportional to 72,933.21, 109,418.27 and 20,342.66 is: 30,519.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,933.21 : 109,418.27 = 20,342.66 : x
  2. Step 2: Convert to fraction form
    72,933.21/109,418.27 = 20,342.66/x
  3. Step 3: Cross multiply
    72,933.21x = 109,418.27 × 20,342.66
  4. Step 4: Simplify right side
    72,933.21x = 2,225,858,015.59
  5. Step 5: Solve for x
    x = 2,225,858,015.59/72,933.21
  6. Step 6: Final answer
    x = 30,519.13

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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.