Home / 73,081.41-109,629.08-20,490.75

Finding the Fourth Proportional to 73,081.41, 109,629.08 and 20,490.75

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Solution

The fourth proportional to 73,081.41, 109,629.08 and 20,490.75 is: 30,738.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,081.41 : 109,629.08 = 20,490.75 : x
  2. Step 2: Convert to fraction form
    73,081.41/109,629.08 = 20,490.75/x
  3. Step 3: Cross multiply
    73,081.41x = 109,629.08 × 20,490.75
  4. Step 4: Simplify right side
    73,081.41x = 2,246,381,968.56
  5. Step 5: Solve for x
    x = 2,246,381,968.56/73,081.41
  6. Step 6: Final answer
    x = 30,738.08

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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.