Home / 87,629.63-131,444.38-21,069.74

Finding the Fourth Proportional to 87,629.63, 131,444.38 and 21,069.74

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Solution

The fourth proportional to 87,629.63, 131,444.38 and 21,069.74 is: 31,604.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.63 : 131,444.38 = 21,069.74 : x
  2. Step 2: Convert to fraction form
    87,629.63/131,444.38 = 21,069.74/x
  3. Step 3: Cross multiply
    87,629.63x = 131,444.38 × 21,069.74
  4. Step 4: Simplify right side
    87,629.63x = 2,769,498,201.16
  5. Step 5: Solve for x
    x = 2,769,498,201.16/87,629.63
  6. Step 6: Final answer
    x = 31,604.59

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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.