Home / 83,728.58-115,551.87-47,929.82

Finding the Fourth Proportional to 83,728.58, 115,551.87 and 47,929.82

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Solution

The fourth proportional to 83,728.58, 115,551.87 and 47,929.82 is: 66,146.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,728.58 : 115,551.87 = 47,929.82 : x
  2. Step 2: Convert to fraction form
    83,728.58/115,551.87 = 47,929.82/x
  3. Step 3: Cross multiply
    83,728.58x = 115,551.87 × 47,929.82
  4. Step 4: Simplify right side
    83,728.58x = 5,538,380,329.76
  5. Step 5: Solve for x
    x = 5,538,380,329.76/83,728.58
  6. Step 6: Final answer
    x = 66,146.83

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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.