Home / 72,716.82-109,077.06-20,126.76

Finding the Fourth Proportional to 72,716.82, 109,077.06 and 20,126.76

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Solution

The fourth proportional to 72,716.82, 109,077.06 and 20,126.76 is: 30,190.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,716.82 : 109,077.06 = 20,126.76 : x
  2. Step 2: Convert to fraction form
    72,716.82/109,077.06 = 20,126.76/x
  3. Step 3: Cross multiply
    72,716.82x = 109,077.06 × 20,126.76
  4. Step 4: Simplify right side
    72,716.82x = 2,195,367,808.13
  5. Step 5: Solve for x
    x = 2,195,367,808.13/72,716.82
  6. Step 6: Final answer
    x = 30,190.65

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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.