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Finding the Fourth Proportional to 80,560.71, 120,314.25 and 68,586.84

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Solution

The fourth proportional to 80,560.71, 120,314.25 and 68,586.84 is: 102,431.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,560.71 : 120,314.25 = 68,586.84 : x
  2. Step 2: Convert to fraction form
    80,560.71/120,314.25 = 68,586.84/x
  3. Step 3: Cross multiply
    80,560.71x = 120,314.25 × 68,586.84
  4. Step 4: Simplify right side
    80,560.71x = 8,251,974,214.47
  5. Step 5: Solve for x
    x = 8,251,974,214.47/80,560.71
  6. Step 6: Final answer
    x = 102,431.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.