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Finding the Fourth Proportional to 65,243.30, 97,879.52 and 20,872.71

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Solution

The fourth proportional to 65,243.30, 97,879.52 and 20,872.71 is: 31,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,243.30 : 97,879.52 = 20,872.71 : x
  2. Step 2: Convert to fraction form
    65,243.30/97,879.52 = 20,872.71/x
  3. Step 3: Cross multiply
    65,243.30x = 97,879.52 × 20,872.71
  4. Step 4: Simplify right side
    65,243.30x = 2,043,010,888.08
  5. Step 5: Solve for x
    x = 2,043,010,888.08/65,243.30
  6. Step 6: Final answer
    x = 31,313.73

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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.