Home / 87,710.38-131,564.42-21,150.01

Finding the Fourth Proportional to 87,710.38, 131,564.42 and 21,150.01

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Solution

The fourth proportional to 87,710.38, 131,564.42 and 21,150.01 is: 31,724.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,710.38 : 131,564.42 = 21,150.01 : x
  2. Step 2: Convert to fraction form
    87,710.38/131,564.42 = 21,150.01/x
  3. Step 3: Cross multiply
    87,710.38x = 131,564.42 × 21,150.01
  4. Step 4: Simplify right side
    87,710.38x = 2,782,588,936.66
  5. Step 5: Solve for x
    x = 2,782,588,936.66/87,710.38
  6. Step 6: Final answer
    x = 31,724.74

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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.