Home / 80,355.19-120,552.86-56,708.89

Finding the Fourth Proportional to 80,355.19, 120,552.86 and 56,708.89

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Solution

The fourth proportional to 80,355.19, 120,552.86 and 56,708.89 is: 85,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,355.19 : 120,552.86 = 56,708.89 : x
  2. Step 2: Convert to fraction form
    80,355.19/120,552.86 = 56,708.89/x
  3. Step 3: Cross multiply
    80,355.19x = 120,552.86 × 56,708.89
  4. Step 4: Simplify right side
    80,355.19x = 6,836,419,069.75
  5. Step 5: Solve for x
    x = 6,836,419,069.75/80,355.19
  6. Step 6: Final answer
    x = 85,077.51

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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.