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Finding the Fourth Proportional to 64,912.88, 97,379.16 and 20,524.88

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Solution

The fourth proportional to 64,912.88, 97,379.16 and 20,524.88 is: 30,790.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,912.88 : 97,379.16 = 20,524.88 : x
  2. Step 2: Convert to fraction form
    64,912.88/97,379.16 = 20,524.88/x
  3. Step 3: Cross multiply
    64,912.88x = 97,379.16 × 20,524.88
  4. Step 4: Simplify right side
    64,912.88x = 1,998,695,573.50
  5. Step 5: Solve for x
    x = 1,998,695,573.50/64,912.88
  6. Step 6: Final answer
    x = 30,790.43

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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.