Home / 80,579.10-120,942.48-43,181.40

Finding the Fourth Proportional to 80,579.10, 120,942.48 and 43,181.40

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Solution

The fourth proportional to 80,579.10, 120,942.48 and 43,181.40 is: 64,811.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,579.10 : 120,942.48 = 43,181.40 : x
  2. Step 2: Convert to fraction form
    80,579.10/120,942.48 = 43,181.40/x
  3. Step 3: Cross multiply
    80,579.10x = 120,942.48 × 43,181.40
  4. Step 4: Simplify right side
    80,579.10x = 5,222,465,605.87
  5. Step 5: Solve for x
    x = 5,222,465,605.87/80,579.10
  6. Step 6: Final answer
    x = 64,811.66

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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.