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Finding the Fourth Proportional to 83,633.82, 125,418.02 and 30,313.14

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Solution

The fourth proportional to 83,633.82, 125,418.02 and 30,313.14 is: 45,457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,633.82 : 125,418.02 = 30,313.14 : x
  2. Step 2: Convert to fraction form
    83,633.82/125,418.02 = 30,313.14/x
  3. Step 3: Cross multiply
    83,633.82x = 125,418.02 × 30,313.14
  4. Step 4: Simplify right side
    83,633.82x = 3,801,813,847.22
  5. Step 5: Solve for x
    x = 3,801,813,847.22/83,633.82
  6. Step 6: Final answer
    x = 45,457.85

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1.5x scale

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.