Home / 87,856.48-131,783.56-21,297.20

Finding the Fourth Proportional to 87,856.48, 131,783.56 and 21,297.20

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Solution

The fourth proportional to 87,856.48, 131,783.56 and 21,297.20 is: 31,945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.48 : 131,783.56 = 21,297.20 : x
  2. Step 2: Convert to fraction form
    87,856.48/131,783.56 = 21,297.20/x
  3. Step 3: Cross multiply
    87,856.48x = 131,783.56 × 21,297.20
  4. Step 4: Simplify right side
    87,856.48x = 2,806,620,121.87
  5. Step 5: Solve for x
    x = 2,806,620,121.87/87,856.48
  6. Step 6: Final answer
    x = 31,945.51

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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.