Home / 78,377.39-117,564.46-19,213.37

Finding the Fourth Proportional to 78,377.39, 117,564.46 and 19,213.37

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Solution

The fourth proportional to 78,377.39, 117,564.46 and 19,213.37 is: 28,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,377.39 : 117,564.46 = 19,213.37 : x
  2. Step 2: Convert to fraction form
    78,377.39/117,564.46 = 19,213.37/x
  3. Step 3: Cross multiply
    78,377.39x = 117,564.46 × 19,213.37
  4. Step 4: Simplify right side
    78,377.39x = 2,258,809,468.83
  5. Step 5: Solve for x
    x = 2,258,809,468.83/78,377.39
  6. Step 6: Final answer
    x = 28,819.66

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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.