Home / 78,270.45-117,396.10-33,309.91

Finding the Fourth Proportional to 78,270.45, 117,396.10 and 33,309.91

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Solution

The fourth proportional to 78,270.45, 117,396.10 and 33,309.91 is: 49,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,270.45 : 117,396.10 = 33,309.91 : x
  2. Step 2: Convert to fraction form
    78,270.45/117,396.10 = 33,309.91/x
  3. Step 3: Cross multiply
    78,270.45x = 117,396.10 × 33,309.91
  4. Step 4: Simplify right side
    78,270.45x = 3,910,453,525.35
  5. Step 5: Solve for x
    x = 3,910,453,525.35/78,270.45
  6. Step 6: Final answer
    x = 49,960.79

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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.