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Finding the Fourth Proportional to 80,502.39, 120,502.08 and 55,395.63

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Solution

The fourth proportional to 80,502.39, 120,502.08 and 55,395.63 is: 82,920.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,502.39 : 120,502.08 = 55,395.63 : x
  2. Step 2: Convert to fraction form
    80,502.39/120,502.08 = 55,395.63/x
  3. Step 3: Cross multiply
    80,502.39x = 120,502.08 × 55,395.63
  4. Step 4: Simplify right side
    80,502.39x = 6,675,288,637.91
  5. Step 5: Solve for x
    x = 6,675,288,637.91/80,502.39
  6. Step 6: Final answer
    x = 82,920.38

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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.