Home / 78,201.58-117,208.32-36,023.66

Finding the Fourth Proportional to 78,201.58, 117,208.32 and 36,023.66

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Solution

The fourth proportional to 78,201.58, 117,208.32 and 36,023.66 is: 53,992.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,201.58 : 117,208.32 = 36,023.66 : x
  2. Step 2: Convert to fraction form
    78,201.58/117,208.32 = 36,023.66/x
  3. Step 3: Cross multiply
    78,201.58x = 117,208.32 × 36,023.66
  4. Step 4: Simplify right side
    78,201.58x = 4,222,272,668.85
  5. Step 5: Solve for x
    x = 4,222,272,668.85/78,201.58
  6. Step 6: Final answer
    x = 53,992.17

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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.