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Finding the Fourth Proportional to 80,489.52, 111,080.88 and 48,659.76

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Solution

The fourth proportional to 80,489.52, 111,080.88 and 48,659.76 is: 67,153.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,489.52 : 111,080.88 = 48,659.76 : x
  2. Step 2: Convert to fraction form
    80,489.52/111,080.88 = 48,659.76/x
  3. Step 3: Cross multiply
    80,489.52x = 111,080.88 × 48,659.76
  4. Step 4: Simplify right side
    80,489.52x = 5,405,168,961.39
  5. Step 5: Solve for x
    x = 5,405,168,961.39/80,489.52
  6. Step 6: Final answer
    x = 67,153.70

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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.