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Finding the Fourth Proportional to 66,995.10, 100,456.20 and 27,556.20

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Solution

The fourth proportional to 66,995.10, 100,456.20 and 27,556.20 is: 41,319.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,995.10 : 100,456.20 = 27,556.20 : x
  2. Step 2: Convert to fraction form
    66,995.10/100,456.20 = 27,556.20/x
  3. Step 3: Cross multiply
    66,995.10x = 100,456.20 × 27,556.20
  4. Step 4: Simplify right side
    66,995.10x = 2,768,191,138.44
  5. Step 5: Solve for x
    x = 2,768,191,138.44/66,995.10
  6. Step 6: Final answer
    x = 41,319.31

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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.