Home / 66,781.37-92,160.78-38,105.70

Finding the Fourth Proportional to 66,781.37, 92,160.78 and 38,105.70

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Solution

The fourth proportional to 66,781.37, 92,160.78 and 38,105.70 is: 52,587.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,781.37 : 92,160.78 = 38,105.70 : x
  2. Step 2: Convert to fraction form
    66,781.37/92,160.78 = 38,105.70/x
  3. Step 3: Cross multiply
    66,781.37x = 92,160.78 × 38,105.70
  4. Step 4: Simplify right side
    66,781.37x = 3,511,850,843.92
  5. Step 5: Solve for x
    x = 3,511,850,843.92/66,781.37
  6. Step 6: Final answer
    x = 52,587.28

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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.