Home / 85,236.75-117,640.58-51,279.56

Finding the Fourth Proportional to 85,236.75, 117,640.58 and 51,279.56

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Solution

The fourth proportional to 85,236.75, 117,640.58 and 51,279.56 is: 70,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,236.75 : 117,640.58 = 51,279.56 : x
  2. Step 2: Convert to fraction form
    85,236.75/117,640.58 = 51,279.56/x
  3. Step 3: Cross multiply
    85,236.75x = 117,640.58 × 51,279.56
  4. Step 4: Simplify right side
    85,236.75x = 6,032,557,180.54
  5. Step 5: Solve for x
    x = 6,032,557,180.54/85,236.75
  6. Step 6: Final answer
    x = 70,774.13

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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.