Home / 87,614.68-131,422-21,054.81

Finding the Fourth Proportional to 87,614.68, 131,422 and 21,054.81

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Solution

The fourth proportional to 87,614.68, 131,422 and 21,054.81 is: 31,582.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,614.68 : 131,422 = 21,054.81 : x
  2. Step 2: Convert to fraction form
    87,614.68/131,422 = 21,054.81/x
  3. Step 3: Cross multiply
    87,614.68x = 131,422 × 21,054.81
  4. Step 4: Simplify right side
    87,614.68x = 2,767,065,239.82
  5. Step 5: Solve for x
    x = 2,767,065,239.82/87,614.68
  6. Step 6: Final answer
    x = 31,582.21

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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.