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Finding the Fourth Proportional to 86,651.64, 129,996.90 and 27,489.24

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Solution

The fourth proportional to 86,651.64, 129,996.90 and 27,489.24 is: 41,240.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,651.64 : 129,996.90 = 27,489.24 : x
  2. Step 2: Convert to fraction form
    86,651.64/129,996.90 = 27,489.24/x
  3. Step 3: Cross multiply
    86,651.64x = 129,996.90 × 27,489.24
  4. Step 4: Simplify right side
    86,651.64x = 3,573,515,983.36
  5. Step 5: Solve for x
    x = 3,573,515,983.36/86,651.64
  6. Step 6: Final answer
    x = 41,240.03

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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.