Home / 85,505.25-128,261.52-23,175.75

Finding the Fourth Proportional to 85,505.25, 128,261.52 and 23,175.75

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Solution

The fourth proportional to 85,505.25, 128,261.52 and 23,175.75 is: 34,764.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,505.25 : 128,261.52 = 23,175.75 : x
  2. Step 2: Convert to fraction form
    85,505.25/128,261.52 = 23,175.75/x
  3. Step 3: Cross multiply
    85,505.25x = 128,261.52 × 23,175.75
  4. Step 4: Simplify right side
    85,505.25x = 2,972,556,922.14
  5. Step 5: Solve for x
    x = 2,972,556,922.14/85,505.25
  6. Step 6: Final answer
    x = 34,764.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.