Home / 87,743.64-131,634.90-40,971

Finding the Fourth Proportional to 87,743.64, 131,634.90 and 40,971

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Solution

The fourth proportional to 87,743.64, 131,634.90 and 40,971 is: 61,465.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,743.64 : 131,634.90 = 40,971 : x
  2. Step 2: Convert to fraction form
    87,743.64/131,634.90 = 40,971/x
  3. Step 3: Cross multiply
    87,743.64x = 131,634.90 × 40,971
  4. Step 4: Simplify right side
    87,743.64x = 5,393,213,487.90
  5. Step 5: Solve for x
    x = 5,393,213,487.90/87,743.64
  6. Step 6: Final answer
    x = 61,465.58

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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.