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Finding the Fourth Proportional to 40,064.96, 60,072 and 21,333.44

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Solution

The fourth proportional to 40,064.96, 60,072 and 21,333.44 is: 31,986.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,064.96 : 60,072 = 21,333.44 : x
  2. Step 2: Convert to fraction form
    40,064.96/60,072 = 21,333.44/x
  3. Step 3: Cross multiply
    40,064.96x = 60,072 × 21,333.44
  4. Step 4: Simplify right side
    40,064.96x = 1,281,542,407.68
  5. Step 5: Solve for x
    x = 1,281,542,407.68/40,064.96
  6. Step 6: Final answer
    x = 31,986.61

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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.