Home / 87,202.56-120,329.76-51,390.24

Finding the Fourth Proportional to 87,202.56, 120,329.76 and 51,390.24

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Solution

The fourth proportional to 87,202.56, 120,329.76 and 51,390.24 is: 70,912.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,202.56 : 120,329.76 = 51,390.24 : x
  2. Step 2: Convert to fraction form
    87,202.56/120,329.76 = 51,390.24/x
  3. Step 3: Cross multiply
    87,202.56x = 120,329.76 × 51,390.24
  4. Step 4: Simplify right side
    87,202.56x = 6,183,775,245.54
  5. Step 5: Solve for x
    x = 6,183,775,245.54/87,202.56
  6. Step 6: Final answer
    x = 70,912.77

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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.