Home / 78,280.36-117,414.39-22,118.20

Finding the Fourth Proportional to 78,280.36, 117,414.39 and 22,118.20

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Solution

The fourth proportional to 78,280.36, 117,414.39 and 22,118.20 is: 33,175.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280.36 : 117,414.39 = 22,118.20 : x
  2. Step 2: Convert to fraction form
    78,280.36/117,414.39 = 22,118.20/x
  3. Step 3: Cross multiply
    78,280.36x = 117,414.39 × 22,118.20
  4. Step 4: Simplify right side
    78,280.36x = 2,596,994,960.90
  5. Step 5: Solve for x
    x = 2,596,994,960.90/78,280.36
  6. Step 6: Final answer
    x = 33,175.56

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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.