Home / 87,887.37-131,830.07-21,328.23

Finding the Fourth Proportional to 87,887.37, 131,830.07 and 21,328.23

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Solution

The fourth proportional to 87,887.37, 131,830.07 and 21,328.23 is: 31,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,887.37 : 131,830.07 = 21,328.23 : x
  2. Step 2: Convert to fraction form
    87,887.37/131,830.07 = 21,328.23/x
  3. Step 3: Cross multiply
    87,887.37x = 131,830.07 × 21,328.23
  4. Step 4: Simplify right side
    87,887.37x = 2,811,701,947.23
  5. Step 5: Solve for x
    x = 2,811,701,947.23/87,887.37
  6. Step 6: Final answer
    x = 31,992.10

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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.