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Finding the Fourth Proportional to 86,274.25, 129,424.43 and 27,104.36

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Solution

The fourth proportional to 86,274.25, 129,424.43 and 27,104.36 is: 40,660.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,274.25 : 129,424.43 = 27,104.36 : x
  2. Step 2: Convert to fraction form
    86,274.25/129,424.43 = 27,104.36/x
  3. Step 3: Cross multiply
    86,274.25x = 129,424.43 × 27,104.36
  4. Step 4: Simplify right side
    86,274.25x = 3,507,965,764.15
  5. Step 5: Solve for x
    x = 3,507,965,764.15/86,274.25
  6. Step 6: Final answer
    x = 40,660.64

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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.