Home / 80,579.97-120,869.96-30,648.53

Finding the Fourth Proportional to 80,579.97, 120,869.96 and 30,648.53

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Solution

The fourth proportional to 80,579.97, 120,869.96 and 30,648.53 is: 45,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,579.97 : 120,869.96 = 30,648.53 : x
  2. Step 2: Convert to fraction form
    80,579.97/120,869.96 = 30,648.53/x
  3. Step 3: Cross multiply
    80,579.97x = 120,869.96 × 30,648.53
  4. Step 4: Simplify right side
    80,579.97x = 3,704,486,744.09
  5. Step 5: Solve for x
    x = 3,704,486,744.09/80,579.97
  6. Step 6: Final answer
    x = 45,972.80

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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.