Home / 85,380.64-117,785.26-55,175.46

Finding the Fourth Proportional to 85,380.64, 117,785.26 and 55,175.46

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Solution

The fourth proportional to 85,380.64, 117,785.26 and 55,175.46 is: 76,116.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,380.64 : 117,785.26 = 55,175.46 : x
  2. Step 2: Convert to fraction form
    85,380.64/117,785.26 = 55,175.46/x
  3. Step 3: Cross multiply
    85,380.64x = 117,785.26 × 55,175.46
  4. Step 4: Simplify right side
    85,380.64x = 6,498,855,901.72
  5. Step 5: Solve for x
    x = 6,498,855,901.72/85,380.64
  6. Step 6: Final answer
    x = 76,116.27

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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.