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Finding the Fourth Proportional to 78,164.40, 117,246.60 and 33,760.20

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Solution

The fourth proportional to 78,164.40, 117,246.60 and 33,760.20 is: 50,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,164.40 : 117,246.60 = 33,760.20 : x
  2. Step 2: Convert to fraction form
    78,164.40/117,246.60 = 33,760.20/x
  3. Step 3: Cross multiply
    78,164.40x = 117,246.60 × 33,760.20
  4. Step 4: Simplify right side
    78,164.40x = 3,958,268,665.32
  5. Step 5: Solve for x
    x = 3,958,268,665.32/78,164.40
  6. Step 6: Final answer
    x = 50,640.30

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1.5x scale

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.