Home / 84,529.20-126,939.60-45,163.20

Finding the Fourth Proportional to 84,529.20, 126,939.60 and 45,163.20

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Solution

The fourth proportional to 84,529.20, 126,939.60 and 45,163.20 is: 67,822.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,529.20 : 126,939.60 = 45,163.20 : x
  2. Step 2: Convert to fraction form
    84,529.20/126,939.60 = 45,163.20/x
  3. Step 3: Cross multiply
    84,529.20x = 126,939.60 × 45,163.20
  4. Step 4: Simplify right side
    84,529.20x = 5,732,998,542.72
  5. Step 5: Solve for x
    x = 5,732,998,542.72/84,529.20
  6. Step 6: Final answer
    x = 67,822.70

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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.