Home / 87,921.60-131,865.60-28,739.52

Finding the Fourth Proportional to 87,921.60, 131,865.60 and 28,739.52

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Solution

The fourth proportional to 87,921.60, 131,865.60 and 28,739.52 is: 43,103.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.60 : 131,865.60 = 28,739.52 : x
  2. Step 2: Convert to fraction form
    87,921.60/131,865.60 = 28,739.52/x
  3. Step 3: Cross multiply
    87,921.60x = 131,865.60 × 28,739.52
  4. Step 4: Simplify right side
    87,921.60x = 3,789,754,048.51
  5. Step 5: Solve for x
    x = 3,789,754,048.51/87,921.60
  6. Step 6: Final answer
    x = 43,103.79

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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.