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Finding the Fourth Proportional to 66,175.70, 99,120.99 and 31,062.74

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Solution

The fourth proportional to 66,175.70, 99,120.99 and 31,062.74 is: 46,527.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,175.70 : 99,120.99 = 31,062.74 : x
  2. Step 2: Convert to fraction form
    66,175.70/99,120.99 = 31,062.74/x
  3. Step 3: Cross multiply
    66,175.70x = 99,120.99 × 31,062.74
  4. Step 4: Simplify right side
    66,175.70x = 3,078,969,540.91
  5. Step 5: Solve for x
    x = 3,078,969,540.91/66,175.70
  6. Step 6: Final answer
    x = 46,527.19

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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.