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Finding the Fourth Proportional to 83,305.53, 124,958.16 and 20,976.03

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Solution

The fourth proportional to 83,305.53, 124,958.16 and 20,976.03 is: 31,464.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,305.53 : 124,958.16 = 20,976.03 : x
  2. Step 2: Convert to fraction form
    83,305.53/124,958.16 = 20,976.03/x
  3. Step 3: Cross multiply
    83,305.53x = 124,958.16 × 20,976.03
  4. Step 4: Simplify right side
    83,305.53x = 2,621,126,112.90
  5. Step 5: Solve for x
    x = 2,621,126,112.90/83,305.53
  6. Step 6: Final answer
    x = 31,464.01

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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.