Home / 72,179.09-108,266.20-25,430.75

Finding the Fourth Proportional to 72,179.09, 108,266.20 and 25,430.75

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Solution

The fourth proportional to 72,179.09, 108,266.20 and 25,430.75 is: 38,145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179.09 : 108,266.20 = 25,430.75 : x
  2. Step 2: Convert to fraction form
    72,179.09/108,266.20 = 25,430.75/x
  3. Step 3: Cross multiply
    72,179.09x = 108,266.20 × 25,430.75
  4. Step 4: Simplify right side
    72,179.09x = 2,753,290,665.65
  5. Step 5: Solve for x
    x = 2,753,290,665.65/72,179.09
  6. Step 6: Final answer
    x = 38,145.27

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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.