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Finding the Fourth Proportional to 80,218.64, 110,667.12 and 49,995.92

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Solution

The fourth proportional to 80,218.64, 110,667.12 and 49,995.92 is: 68,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,218.64 : 110,667.12 = 49,995.92 : x
  2. Step 2: Convert to fraction form
    80,218.64/110,667.12 = 49,995.92/x
  3. Step 3: Cross multiply
    80,218.64x = 110,667.12 × 49,995.92
  4. Step 4: Simplify right side
    80,218.64x = 5,532,904,478.15
  5. Step 5: Solve for x
    x = 5,532,904,478.15/80,218.64
  6. Step 6: Final answer
    x = 68,972.80

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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.