Home / 78,179.96-117,245.64-25,577.75

Finding the Fourth Proportional to 78,179.96, 117,245.64 and 25,577.75

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Solution

The fourth proportional to 78,179.96, 117,245.64 and 25,577.75 is: 38,358.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,179.96 : 117,245.64 = 25,577.75 : x
  2. Step 2: Convert to fraction form
    78,179.96/117,245.64 = 25,577.75/x
  3. Step 3: Cross multiply
    78,179.96x = 117,245.64 × 25,577.75
  4. Step 4: Simplify right side
    78,179.96x = 2,998,879,668.51
  5. Step 5: Solve for x
    x = 2,998,879,668.51/78,179.96
  6. Step 6: Final answer
    x = 38,358.67

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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.