Home / 87,073.56-130,359.24-78,069.60

Finding the Fourth Proportional to 87,073.56, 130,359.24 and 78,069.60

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Solution

The fourth proportional to 87,073.56, 130,359.24 and 78,069.60 is: 116,879.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,073.56 : 130,359.24 = 78,069.60 : x
  2. Step 2: Convert to fraction form
    87,073.56/130,359.24 = 78,069.60/x
  3. Step 3: Cross multiply
    87,073.56x = 130,359.24 × 78,069.60
  4. Step 4: Simplify right side
    87,073.56x = 10,177,093,723.10
  5. Step 5: Solve for x
    x = 10,177,093,723.10/87,073.56
  6. Step 6: Final answer
    x = 116,879.27

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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.