Home / 78,163.20-117,322.92-43,119.36

Finding the Fourth Proportional to 78,163.20, 117,322.92 and 43,119.36

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Solution

The fourth proportional to 78,163.20, 117,322.92 and 43,119.36 is: 64,722.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,163.20 : 117,322.92 = 43,119.36 : x
  2. Step 2: Convert to fraction form
    78,163.20/117,322.92 = 43,119.36/x
  3. Step 3: Cross multiply
    78,163.20x = 117,322.92 × 43,119.36
  4. Step 4: Simplify right side
    78,163.20x = 5,058,889,223.73
  5. Step 5: Solve for x
    x = 5,058,889,223.73/78,163.20
  6. Step 6: Final answer
    x = 64,722.14

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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.