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Finding the Fourth Proportional to 86,604.93, 129,824.10 and 27,399.87

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Solution

The fourth proportional to 86,604.93, 129,824.10 and 27,399.87 is: 41,073.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,604.93 : 129,824.10 = 27,399.87 : x
  2. Step 2: Convert to fraction form
    86,604.93/129,824.10 = 27,399.87/x
  3. Step 3: Cross multiply
    86,604.93x = 129,824.10 × 27,399.87
  4. Step 4: Simplify right side
    86,604.93x = 3,557,163,462.87
  5. Step 5: Solve for x
    x = 3,557,163,462.87/86,604.93
  6. Step 6: Final answer
    x = 41,073.45

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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.