Home / 78,634.77-117,853.79-61,928.83

Finding the Fourth Proportional to 78,634.77, 117,853.79 and 61,928.83

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Solution

The fourth proportional to 78,634.77, 117,853.79 and 61,928.83 is: 92,815.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,634.77 : 117,853.79 = 61,928.83 : x
  2. Step 2: Convert to fraction form
    78,634.77/117,853.79 = 61,928.83/x
  3. Step 3: Cross multiply
    78,634.77x = 117,853.79 × 61,928.83
  4. Step 4: Simplify right side
    78,634.77x = 7,298,546,736.50
  5. Step 5: Solve for x
    x = 7,298,546,736.50/78,634.77
  6. Step 6: Final answer
    x = 92,815.77

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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.