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Finding the Fourth Proportional to 80,120.68, 110,528.94 and 51,835.48

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Solution

The fourth proportional to 80,120.68, 110,528.94 and 51,835.48 is: 71,508.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120.68 : 110,528.94 = 51,835.48 : x
  2. Step 2: Convert to fraction form
    80,120.68/110,528.94 = 51,835.48/x
  3. Step 3: Cross multiply
    80,120.68x = 110,528.94 × 51,835.48
  4. Step 4: Simplify right side
    80,120.68x = 5,729,320,658.79
  5. Step 5: Solve for x
    x = 5,729,320,658.79/80,120.68
  6. Step 6: Final answer
    x = 71,508.64

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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.