Home / 78,261.96-117,388.86-25,664.52

Finding the Fourth Proportional to 78,261.96, 117,388.86 and 25,664.52

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Solution

The fourth proportional to 78,261.96, 117,388.86 and 25,664.52 is: 38,495.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,261.96 : 117,388.86 = 25,664.52 : x
  2. Step 2: Convert to fraction form
    78,261.96/117,388.86 = 25,664.52/x
  3. Step 3: Cross multiply
    78,261.96x = 117,388.86 × 25,664.52
  4. Step 4: Simplify right side
    78,261.96x = 3,012,728,745.25
  5. Step 5: Solve for x
    x = 3,012,728,745.25/78,261.96
  6. Step 6: Final answer
    x = 38,495.44

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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.