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Finding the Fourth Proportional to 64,773.59, 97,163.85 and 20,403.80

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Solution

The fourth proportional to 64,773.59, 97,163.85 and 20,403.80 is: 30,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,773.59 : 97,163.85 = 20,403.80 : x
  2. Step 2: Convert to fraction form
    64,773.59/97,163.85 = 20,403.80/x
  3. Step 3: Cross multiply
    64,773.59x = 97,163.85 × 20,403.80
  4. Step 4: Simplify right side
    64,773.59x = 1,982,511,762.63
  5. Step 5: Solve for x
    x = 1,982,511,762.63/64,773.59
  6. Step 6: Final answer
    x = 30,606.79

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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.