Home / 80,942.34-111,777.39-76,524.60

Finding the Fourth Proportional to 80,942.34, 111,777.39 and 76,524.60

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Solution

The fourth proportional to 80,942.34, 111,777.39 and 76,524.60 is: 105,676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,942.34 : 111,777.39 = 76,524.60 : x
  2. Step 2: Convert to fraction form
    80,942.34/111,777.39 = 76,524.60/x
  3. Step 3: Cross multiply
    80,942.34x = 111,777.39 × 76,524.60
  4. Step 4: Simplify right side
    80,942.34x = 8,553,720,058.79
  5. Step 5: Solve for x
    x = 8,553,720,058.79/80,942.34
  6. Step 6: Final answer
    x = 105,676.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.