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Finding the Fourth Proportional to 73,940.54, 110,910.84 and 20,630.36

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Solution

The fourth proportional to 73,940.54, 110,910.84 and 20,630.36 is: 30,945.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,940.54 : 110,910.84 = 20,630.36 : x
  2. Step 2: Convert to fraction form
    73,940.54/110,910.84 = 20,630.36/x
  3. Step 3: Cross multiply
    73,940.54x = 110,910.84 × 20,630.36
  4. Step 4: Simplify right side
    73,940.54x = 2,288,130,557.10
  5. Step 5: Solve for x
    x = 2,288,130,557.10/73,940.54
  6. Step 6: Final answer
    x = 30,945.55

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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.