Home / 87,938.40-131,906.44-21,378.32

Finding the Fourth Proportional to 87,938.40, 131,906.44 and 21,378.32

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Solution

The fourth proportional to 87,938.40, 131,906.44 and 21,378.32 is: 32,067.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,938.40 : 131,906.44 = 21,378.32 : x
  2. Step 2: Convert to fraction form
    87,938.40/131,906.44 = 21,378.32/x
  3. Step 3: Cross multiply
    87,938.40x = 131,906.44 × 21,378.32
  4. Step 4: Simplify right side
    87,938.40x = 2,819,938,084.38
  5. Step 5: Solve for x
    x = 2,819,938,084.38/87,938.40
  6. Step 6: Final answer
    x = 32,067.20

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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.