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Finding the Fourth Proportional to 66,042.57, 91,138.74 and 37,748.86

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Solution

The fourth proportional to 66,042.57, 91,138.74 and 37,748.86 is: 52,093.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.57 : 91,138.74 = 37,748.86 : x
  2. Step 2: Convert to fraction form
    66,042.57/91,138.74 = 37,748.86/x
  3. Step 3: Cross multiply
    66,042.57x = 91,138.74 × 37,748.86
  4. Step 4: Simplify right side
    66,042.57x = 3,440,383,536.84
  5. Step 5: Solve for x
    x = 3,440,383,536.84/66,042.57
  6. Step 6: Final answer
    x = 52,093.43

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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.