Home / 78,435.35-117,556.62-36,258.36

Finding the Fourth Proportional to 78,435.35, 117,556.62 and 36,258.36

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Solution

The fourth proportional to 78,435.35, 117,556.62 and 36,258.36 is: 54,342.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,435.35 : 117,556.62 = 36,258.36 : x
  2. Step 2: Convert to fraction form
    78,435.35/117,556.62 = 36,258.36/x
  3. Step 3: Cross multiply
    78,435.35x = 117,556.62 × 36,258.36
  4. Step 4: Simplify right side
    78,435.35x = 4,262,410,248.34
  5. Step 5: Solve for x
    x = 4,262,410,248.34/78,435.35
  6. Step 6: Final answer
    x = 54,342.97

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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.