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Finding the Fourth Proportional to 66,238.74, 91,411.80 and 37,949.89

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Solution

The fourth proportional to 66,238.74, 91,411.80 and 37,949.89 is: 52,372.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,238.74 : 91,411.80 = 37,949.89 : x
  2. Step 2: Convert to fraction form
    66,238.74/91,411.80 = 37,949.89/x
  3. Step 3: Cross multiply
    66,238.74x = 91,411.80 × 37,949.89
  4. Step 4: Simplify right side
    66,238.74x = 3,469,067,754.70
  5. Step 5: Solve for x
    x = 3,469,067,754.70/66,238.74
  6. Step 6: Final answer
    x = 52,372.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.