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Finding the Fourth Proportional to 39,891.89, 54,999.69 and 32,695.31

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Solution

The fourth proportional to 39,891.89, 54,999.69 and 32,695.31 is: 45,077.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,891.89 : 54,999.69 = 32,695.31 : x
  2. Step 2: Convert to fraction form
    39,891.89/54,999.69 = 32,695.31/x
  3. Step 3: Cross multiply
    39,891.89x = 54,999.69 × 32,695.31
  4. Step 4: Simplify right side
    39,891.89x = 1,798,231,914.45
  5. Step 5: Solve for x
    x = 1,798,231,914.45/39,891.89
  6. Step 6: Final answer
    x = 45,077.63

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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.