Home / 87,830.68-131,746.32-21,270.70

Finding the Fourth Proportional to 87,830.68, 131,746.32 and 21,270.70

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Solution

The fourth proportional to 87,830.68, 131,746.32 and 21,270.70 is: 31,906.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,830.68 : 131,746.32 = 21,270.70 : x
  2. Step 2: Convert to fraction form
    87,830.68/131,746.32 = 21,270.70/x
  3. Step 3: Cross multiply
    87,830.68x = 131,746.32 × 21,270.70
  4. Step 4: Simplify right side
    87,830.68x = 2,802,336,448.82
  5. Step 5: Solve for x
    x = 2,802,336,448.82/87,830.68
  6. Step 6: Final answer
    x = 31,906.12

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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.