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Finding the Fourth Proportional to 30,326.72, 41,828.60 and 20,099.25

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Solution

The fourth proportional to 30,326.72, 41,828.60 and 20,099.25 is: 27,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,326.72 : 41,828.60 = 20,099.25 : x
  2. Step 2: Convert to fraction form
    30,326.72/41,828.60 = 20,099.25/x
  3. Step 3: Cross multiply
    30,326.72x = 41,828.60 × 20,099.25
  4. Step 4: Simplify right side
    30,326.72x = 840,723,538.80
  5. Step 5: Solve for x
    x = 840,723,538.80/30,326.72
  6. Step 6: Final answer
    x = 27,722.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.