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Finding the Fourth Proportional to 71,817.67, 107,724.97 and 19,227.16

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Solution

The fourth proportional to 71,817.67, 107,724.97 and 19,227.16 is: 28,840.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,817.67 : 107,724.97 = 19,227.16 : x
  2. Step 2: Convert to fraction form
    71,817.67/107,724.97 = 19,227.16/x
  3. Step 3: Cross multiply
    71,817.67x = 107,724.97 × 19,227.16
  4. Step 4: Simplify right side
    71,817.67x = 2,071,245,234.19
  5. Step 5: Solve for x
    x = 2,071,245,234.19/71,817.67
  6. Step 6: Final answer
    x = 28,840.33

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1.5x scale

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.