Home / 87,480.12-131,187.92-31,305

Finding the Fourth Proportional to 87,480.12, 131,187.92 and 31,305

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Solution

The fourth proportional to 87,480.12, 131,187.92 and 31,305 is: 46,945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,480.12 : 131,187.92 = 31,305 : x
  2. Step 2: Convert to fraction form
    87,480.12/131,187.92 = 31,305/x
  3. Step 3: Cross multiply
    87,480.12x = 131,187.92 × 31,305
  4. Step 4: Simplify right side
    87,480.12x = 4,106,837,679.08
  5. Step 5: Solve for x
    x = 4,106,837,679.08/87,480.12
  6. Step 6: Final answer
    x = 46,945.95

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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.