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Finding the Fourth Proportional to 70,999.05, 106,480.33 and 21,067.33

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Solution

The fourth proportional to 70,999.05, 106,480.33 and 21,067.33 is: 31,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,999.05 : 106,480.33 = 21,067.33 : x
  2. Step 2: Convert to fraction form
    70,999.05/106,480.33 = 21,067.33/x
  3. Step 3: Cross multiply
    70,999.05x = 106,480.33 × 21,067.33
  4. Step 4: Simplify right side
    70,999.05x = 2,243,256,250.62
  5. Step 5: Solve for x
    x = 2,243,256,250.62/70,999.05
  6. Step 6: Final answer
    x = 31,595.58

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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.