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Finding the Fourth Proportional to 86,646.96, 129,914.81 and 36,081

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Solution

The fourth proportional to 86,646.96, 129,914.81 and 36,081 is: 54,098.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,646.96 : 129,914.81 = 36,081 : x
  2. Step 2: Convert to fraction form
    86,646.96/129,914.81 = 36,081/x
  3. Step 3: Cross multiply
    86,646.96x = 129,914.81 × 36,081
  4. Step 4: Simplify right side
    86,646.96x = 4,687,456,079.21
  5. Step 5: Solve for x
    x = 4,687,456,079.21/86,646.96
  6. Step 6: Final answer
    x = 54,098.33

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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.