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Finding the Fourth Proportional to 73,271.88, 109,912.48 and 20,685.48

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Solution

The fourth proportional to 73,271.88, 109,912.48 and 20,685.48 is: 31,029.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,271.88 : 109,912.48 = 20,685.48 : x
  2. Step 2: Convert to fraction form
    73,271.88/109,912.48 = 20,685.48/x
  3. Step 3: Cross multiply
    73,271.88x = 109,912.48 × 20,685.48
  4. Step 4: Simplify right side
    73,271.88x = 2,273,592,406.79
  5. Step 5: Solve for x
    x = 2,273,592,406.79/73,271.88
  6. Step 6: Final answer
    x = 31,029.54

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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.