Home / 78,246.36-117,391.41-25,692.75

Finding the Fourth Proportional to 78,246.36, 117,391.41 and 25,692.75

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Solution

The fourth proportional to 78,246.36, 117,391.41 and 25,692.75 is: 38,546.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,246.36 : 117,391.41 = 25,692.75 : x
  2. Step 2: Convert to fraction form
    78,246.36/117,391.41 = 25,692.75/x
  3. Step 3: Cross multiply
    78,246.36x = 117,391.41 × 25,692.75
  4. Step 4: Simplify right side
    78,246.36x = 3,016,108,149.28
  5. Step 5: Solve for x
    x = 3,016,108,149.28/78,246.36
  6. Step 6: Final answer
    x = 38,546.31

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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.