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Finding the Fourth Proportional to 73,187.89, 100,999.29 and 39,653.89

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Solution

The fourth proportional to 73,187.89, 100,999.29 and 39,653.89 is: 54,722.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,187.89 : 100,999.29 = 39,653.89 : x
  2. Step 2: Convert to fraction form
    73,187.89/100,999.29 = 39,653.89/x
  3. Step 3: Cross multiply
    73,187.89x = 100,999.29 × 39,653.89
  4. Step 4: Simplify right side
    73,187.89x = 4,005,014,735.74
  5. Step 5: Solve for x
    x = 4,005,014,735.74/73,187.89
  6. Step 6: Final answer
    x = 54,722.37

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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.