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Finding the Fourth Proportional to 87,907.70, 131,870.73 and 25,578.20

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Solution

The fourth proportional to 87,907.70, 131,870.73 and 25,578.20 is: 38,369.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,907.70 : 131,870.73 = 25,578.20 : x
  2. Step 2: Convert to fraction form
    87,907.70/131,870.73 = 25,578.20/x
  3. Step 3: Cross multiply
    87,907.70x = 131,870.73 × 25,578.20
  4. Step 4: Simplify right side
    87,907.70x = 3,373,015,906.09
  5. Step 5: Solve for x
    x = 3,373,015,906.09/87,907.70
  6. Step 6: Final answer
    x = 38,369.97

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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.