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Finding the Fourth Proportional to 72,379.28, 108,563.69 and 22,458.11

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Solution

The fourth proportional to 72,379.28, 108,563.69 and 22,458.11 is: 33,685.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,379.28 : 108,563.69 = 22,458.11 : x
  2. Step 2: Convert to fraction form
    72,379.28/108,563.69 = 22,458.11/x
  3. Step 3: Cross multiply
    72,379.28x = 108,563.69 × 22,458.11
  4. Step 4: Simplify right side
    72,379.28x = 2,438,134,805.35
  5. Step 5: Solve for x
    x = 2,438,134,805.35/72,379.28
  6. Step 6: Final answer
    x = 33,685.53

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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.