Home / 87,857.08-131,784.44-21,297.78

Finding the Fourth Proportional to 87,857.08, 131,784.44 and 21,297.78

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Solution

The fourth proportional to 87,857.08, 131,784.44 and 21,297.78 is: 31,946.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,857.08 : 131,784.44 = 21,297.78 : x
  2. Step 2: Convert to fraction form
    87,857.08/131,784.44 = 21,297.78/x
  3. Step 3: Cross multiply
    87,857.08x = 131,784.44 × 21,297.78
  4. Step 4: Simplify right side
    87,857.08x = 2,806,715,904.05
  5. Step 5: Solve for x
    x = 2,806,715,904.05/87,857.08
  6. Step 6: Final answer
    x = 31,946.38

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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.