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Finding the Fourth Proportional to 83,940.60, 125,813.70 and 33,987.90

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Solution

The fourth proportional to 83,940.60, 125,813.70 and 33,987.90 is: 50,942.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,940.60 : 125,813.70 = 33,987.90 : x
  2. Step 2: Convert to fraction form
    83,940.60/125,813.70 = 33,987.90/x
  3. Step 3: Cross multiply
    83,940.60x = 125,813.70 × 33,987.90
  4. Step 4: Simplify right side
    83,940.60x = 4,276,143,454.23
  5. Step 5: Solve for x
    x = 4,276,143,454.23/83,940.60
  6. Step 6: Final answer
    x = 50,942.49

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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.