Home / 66,743.48-100,115.25-19,996.36

Finding the Fourth Proportional to 66,743.48, 100,115.25 and 19,996.36

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Solution

The fourth proportional to 66,743.48, 100,115.25 and 19,996.36 is: 29,994.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,743.48 : 100,115.25 = 19,996.36 : x
  2. Step 2: Convert to fraction form
    66,743.48/100,115.25 = 19,996.36/x
  3. Step 3: Cross multiply
    66,743.48x = 100,115.25 × 19,996.36
  4. Step 4: Simplify right side
    66,743.48x = 2,001,940,330.20
  5. Step 5: Solve for x
    x = 2,001,940,330.20/66,743.48
  6. Step 6: Final answer
    x = 29,994.54

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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.