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Finding the Fourth Proportional to 86,435.67, 129,664.44 and 27,262.74

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Solution

The fourth proportional to 86,435.67, 129,664.44 and 27,262.74 is: 40,897.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,435.67 : 129,664.44 = 27,262.74 : x
  2. Step 2: Convert to fraction form
    86,435.67/129,664.44 = 27,262.74/x
  3. Step 3: Cross multiply
    86,435.67x = 129,664.44 × 27,262.74
  4. Step 4: Simplify right side
    86,435.67x = 3,535,007,914.97
  5. Step 5: Solve for x
    x = 3,535,007,914.97/86,435.67
  6. Step 6: Final answer
    x = 40,897.56

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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.