Home / 87,859.08-131,787.45-21,299.81

Finding the Fourth Proportional to 87,859.08, 131,787.45 and 21,299.81

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Solution

The fourth proportional to 87,859.08, 131,787.45 and 21,299.81 is: 31,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,859.08 : 131,787.45 = 21,299.81 : x
  2. Step 2: Convert to fraction form
    87,859.08/131,787.45 = 21,299.81/x
  3. Step 3: Cross multiply
    87,859.08x = 131,787.45 × 21,299.81
  4. Step 4: Simplify right side
    87,859.08x = 2,807,046,879.95
  5. Step 5: Solve for x
    x = 2,807,046,879.95/87,859.08
  6. Step 6: Final answer
    x = 31,949.42

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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.