Home / 47,991.12-66,234.15-29,128.56

Finding the Fourth Proportional to 47,991.12, 66,234.15 and 29,128.56

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Solution

The fourth proportional to 47,991.12, 66,234.15 and 29,128.56 is: 40,201.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,991.12 : 66,234.15 = 29,128.56 : x
  2. Step 2: Convert to fraction form
    47,991.12/66,234.15 = 29,128.56/x
  3. Step 3: Cross multiply
    47,991.12x = 66,234.15 × 29,128.56
  4. Step 4: Simplify right side
    47,991.12x = 1,929,305,412.32
  5. Step 5: Solve for x
    x = 1,929,305,412.32/47,991.12
  6. Step 6: Final answer
    x = 40,201.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.