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Finding the Fourth Proportional to 80,999.88, 121,498.80 and 27,691.32

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Solution

The fourth proportional to 80,999.88, 121,498.80 and 27,691.32 is: 41,536.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,999.88 : 121,498.80 = 27,691.32 : x
  2. Step 2: Convert to fraction form
    80,999.88/121,498.80 = 27,691.32/x
  3. Step 3: Cross multiply
    80,999.88x = 121,498.80 × 27,691.32
  4. Step 4: Simplify right side
    80,999.88x = 3,364,462,150.42
  5. Step 5: Solve for x
    x = 3,364,462,150.42/80,999.88
  6. Step 6: Final answer
    x = 41,536.63

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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.