Home / 66,781.44-92,160.86-38,105.76

Finding the Fourth Proportional to 66,781.44, 92,160.86 and 38,105.76

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Solution

The fourth proportional to 66,781.44, 92,160.86 and 38,105.76 is: 52,587.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,781.44 : 92,160.86 = 38,105.76 : x
  2. Step 2: Convert to fraction form
    66,781.44/92,160.86 = 38,105.76/x
  3. Step 3: Cross multiply
    66,781.44x = 92,160.86 × 38,105.76
  4. Step 4: Simplify right side
    66,781.44x = 3,511,859,612.55
  5. Step 5: Solve for x
    x = 3,511,859,612.55/66,781.44
  6. Step 6: Final answer
    x = 52,587.36

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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.