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Finding the Fourth Proportional to 86,620.59, 129,935.54 and 27,460.87

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Solution

The fourth proportional to 86,620.59, 129,935.54 and 27,460.87 is: 41,192.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,620.59 : 129,935.54 = 27,460.87 : x
  2. Step 2: Convert to fraction form
    86,620.59/129,935.54 = 27,460.87/x
  3. Step 3: Cross multiply
    86,620.59x = 129,935.54 × 27,460.87
  4. Step 4: Simplify right side
    86,620.59x = 3,568,143,365.81
  5. Step 5: Solve for x
    x = 3,568,143,365.81/86,620.59
  6. Step 6: Final answer
    x = 41,192.79

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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.