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Finding the Fourth Proportional to 64,806.73, 97,212.15 and 20,433.87

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Solution

The fourth proportional to 64,806.73, 97,212.15 and 20,433.87 is: 30,651.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,806.73 : 97,212.15 = 20,433.87 : x
  2. Step 2: Convert to fraction form
    64,806.73/97,212.15 = 20,433.87/x
  3. Step 3: Cross multiply
    64,806.73x = 97,212.15 × 20,433.87
  4. Step 4: Simplify right side
    64,806.73x = 1,986,420,435.52
  5. Step 5: Solve for x
    x = 1,986,420,435.52/64,806.73
  6. Step 6: Final answer
    x = 30,651.45

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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.