Home / 77,965.52-116,930.39-21,809.60

Finding the Fourth Proportional to 77,965.52, 116,930.39 and 21,809.60

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Solution

The fourth proportional to 77,965.52, 116,930.39 and 21,809.60 is: 32,709.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,965.52 : 116,930.39 = 21,809.60 : x
  2. Step 2: Convert to fraction form
    77,965.52/116,930.39 = 21,809.60/x
  3. Step 3: Cross multiply
    77,965.52x = 116,930.39 × 21,809.60
  4. Step 4: Simplify right side
    77,965.52x = 2,550,204,778.53
  5. Step 5: Solve for x
    x = 2,550,204,778.53/77,965.52
  6. Step 6: Final answer
    x = 32,709.39

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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.