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Finding the Fourth Proportional to 66,716.38, 100,081.53 and 21,741.24

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Solution

The fourth proportional to 66,716.38, 100,081.53 and 21,741.24 is: 32,614.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,716.38 : 100,081.53 = 21,741.24 : x
  2. Step 2: Convert to fraction form
    66,716.38/100,081.53 = 21,741.24/x
  3. Step 3: Cross multiply
    66,716.38x = 100,081.53 × 21,741.24
  4. Step 4: Simplify right side
    66,716.38x = 2,175,896,563.30
  5. Step 5: Solve for x
    x = 2,175,896,563.30/66,716.38
  6. Step 6: Final answer
    x = 32,614.13

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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.