Home / 80,755.70-111,327.35-56,808.05

Finding the Fourth Proportional to 80,755.70, 111,327.35 and 56,808.05

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Solution

The fourth proportional to 80,755.70, 111,327.35 and 56,808.05 is: 78,313.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,755.70 : 111,327.35 = 56,808.05 : x
  2. Step 2: Convert to fraction form
    80,755.70/111,327.35 = 56,808.05/x
  3. Step 3: Cross multiply
    80,755.70x = 111,327.35 × 56,808.05
  4. Step 4: Simplify right side
    80,755.70x = 6,324,288,824.49
  5. Step 5: Solve for x
    x = 6,324,288,824.49/80,755.70
  6. Step 6: Final answer
    x = 78,313.84

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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.