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Finding the Fourth Proportional to 80,071.52, 119,990.56 and 54,682.88

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Solution

The fourth proportional to 80,071.52, 119,990.56 and 54,682.88 is: 81,944.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,071.52 : 119,990.56 = 54,682.88 : x
  2. Step 2: Convert to fraction form
    80,071.52/119,990.56 = 54,682.88/x
  3. Step 3: Cross multiply
    80,071.52x = 119,990.56 × 54,682.88
  4. Step 4: Simplify right side
    80,071.52x = 6,561,429,393.61
  5. Step 5: Solve for x
    x = 6,561,429,393.61/80,071.52
  6. Step 6: Final answer
    x = 81,944.61

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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.