Home / 83,728.64-115,538.82-47,910.44

Finding the Fourth Proportional to 83,728.64, 115,538.82 and 47,910.44

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Solution

The fourth proportional to 83,728.64, 115,538.82 and 47,910.44 is: 66,112.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,728.64 : 115,538.82 = 47,910.44 : x
  2. Step 2: Convert to fraction form
    83,728.64/115,538.82 = 47,910.44/x
  3. Step 3: Cross multiply
    83,728.64x = 115,538.82 × 47,910.44
  4. Step 4: Simplify right side
    83,728.64x = 5,535,515,703.28
  5. Step 5: Solve for x
    x = 5,535,515,703.28/83,728.64
  6. Step 6: Final answer
    x = 66,112.57

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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.