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Finding the Fourth Proportional to 73,189.44, 100,998.72 and 39,654.72

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Solution

The fourth proportional to 73,189.44, 100,998.72 and 39,654.72 is: 54,722.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,189.44 : 100,998.72 = 39,654.72 : x
  2. Step 2: Convert to fraction form
    73,189.44/100,998.72 = 39,654.72/x
  3. Step 3: Cross multiply
    73,189.44x = 100,998.72 × 39,654.72
  4. Step 4: Simplify right side
    73,189.44x = 4,005,075,961.96
  5. Step 5: Solve for x
    x = 4,005,075,961.96/73,189.44
  6. Step 6: Final answer
    x = 54,722.05

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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.