Home / 87,860.36-131,789.37-21,301.08

Finding the Fourth Proportional to 87,860.36, 131,789.37 and 21,301.08

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Solution

The fourth proportional to 87,860.36, 131,789.37 and 21,301.08 is: 31,951.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,860.36 : 131,789.37 = 21,301.08 : x
  2. Step 2: Convert to fraction form
    87,860.36/131,789.37 = 21,301.08/x
  3. Step 3: Cross multiply
    87,860.36x = 131,789.37 × 21,301.08
  4. Step 4: Simplify right side
    87,860.36x = 2,807,255,913.52
  5. Step 5: Solve for x
    x = 2,807,255,913.52/87,860.36
  6. Step 6: Final answer
    x = 31,951.34

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1.5x scale

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.