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Finding the Fourth Proportional to 73,499.89, 110,253.48 and 20,913.07

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Solution

The fourth proportional to 73,499.89, 110,253.48 and 20,913.07 is: 31,370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,499.89 : 110,253.48 = 20,913.07 : x
  2. Step 2: Convert to fraction form
    73,499.89/110,253.48 = 20,913.07/x
  3. Step 3: Cross multiply
    73,499.89x = 110,253.48 × 20,913.07
  4. Step 4: Simplify right side
    73,499.89x = 2,305,738,744.98
  5. Step 5: Solve for x
    x = 2,305,738,744.98/73,499.89
  6. Step 6: Final answer
    x = 31,370.64

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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.