Home / 78,749.96-117,993.44-55,334.48

Finding the Fourth Proportional to 78,749.96, 117,993.44 and 55,334.48

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Solution

The fourth proportional to 78,749.96, 117,993.44 and 55,334.48 is: 82,909.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,749.96 : 117,993.44 = 55,334.48 : x
  2. Step 2: Convert to fraction form
    78,749.96/117,993.44 = 55,334.48/x
  3. Step 3: Cross multiply
    78,749.96x = 117,993.44 × 55,334.48
  4. Step 4: Simplify right side
    78,749.96x = 6,529,105,194.18
  5. Step 5: Solve for x
    x = 6,529,105,194.18/78,749.96
  6. Step 6: Final answer
    x = 82,909.32

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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.