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Finding the Fourth Proportional to 80,605.15, 120,922.31 and 26,572.71

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Solution

The fourth proportional to 80,605.15, 120,922.31 and 26,572.71 is: 39,863.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,605.15 : 120,922.31 = 26,572.71 : x
  2. Step 2: Convert to fraction form
    80,605.15/120,922.31 = 26,572.71/x
  3. Step 3: Cross multiply
    80,605.15x = 120,922.31 × 26,572.71
  4. Step 4: Simplify right side
    80,605.15x = 3,213,233,476.16
  5. Step 5: Solve for x
    x = 3,213,233,476.16/80,605.15
  6. Step 6: Final answer
    x = 39,863.87

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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.