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Finding the Fourth Proportional to 81,674.55, 112,723.08 and 49,861.92

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Solution

The fourth proportional to 81,674.55, 112,723.08 and 49,861.92 is: 68,816.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,674.55 : 112,723.08 = 49,861.92 : x
  2. Step 2: Convert to fraction form
    81,674.55/112,723.08 = 49,861.92/x
  3. Step 3: Cross multiply
    81,674.55x = 112,723.08 × 49,861.92
  4. Step 4: Simplify right side
    81,674.55x = 5,620,589,197.11
  5. Step 5: Solve for x
    x = 5,620,589,197.11/81,674.55
  6. Step 6: Final answer
    x = 68,816.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.