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Finding the Fourth Proportional to 66,115.62, 99,176.61 and 21,741.39

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Solution

The fourth proportional to 66,115.62, 99,176.61 and 21,741.39 is: 32,613.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,115.62 : 99,176.61 = 21,741.39 : x
  2. Step 2: Convert to fraction form
    66,115.62/99,176.61 = 21,741.39/x
  3. Step 3: Cross multiply
    66,115.62x = 99,176.61 × 21,741.39
  4. Step 4: Simplify right side
    66,115.62x = 2,156,237,356.89
  5. Step 5: Solve for x
    x = 2,156,237,356.89/66,115.62
  6. Step 6: Final answer
    x = 32,613.13

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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.