Home / 78,265.32-117,395.88-22,109.30

Finding the Fourth Proportional to 78,265.32, 117,395.88 and 22,109.30

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Solution

The fourth proportional to 78,265.32, 117,395.88 and 22,109.30 is: 33,163.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,265.32 : 117,395.88 = 22,109.30 : x
  2. Step 2: Convert to fraction form
    78,265.32/117,395.88 = 22,109.30/x
  3. Step 3: Cross multiply
    78,265.32x = 117,395.88 × 22,109.30
  4. Step 4: Simplify right side
    78,265.32x = 2,595,540,729.68
  5. Step 5: Solve for x
    x = 2,595,540,729.68/78,265.32
  6. Step 6: Final answer
    x = 33,163.36

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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.