Home / 85,081.58-117,286.70-54,451.28

Finding the Fourth Proportional to 85,081.58, 117,286.70 and 54,451.28

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Solution

The fourth proportional to 85,081.58, 117,286.70 and 54,451.28 is: 75,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.58 : 117,286.70 = 54,451.28 : x
  2. Step 2: Convert to fraction form
    85,081.58/117,286.70 = 54,451.28/x
  3. Step 3: Cross multiply
    85,081.58x = 117,286.70 × 54,451.28
  4. Step 4: Simplify right side
    85,081.58x = 6,386,410,941.98
  5. Step 5: Solve for x
    x = 6,386,410,941.98/85,081.58
  6. Step 6: Final answer
    x = 75,062.20

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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.