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Finding the Fourth Proportional to 40,242, 60,372.12 and 21,512.17

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Solution

The fourth proportional to 40,242, 60,372.12 and 21,512.17 is: 32,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,242 : 60,372.12 = 21,512.17 : x
  2. Step 2: Convert to fraction form
    40,242/60,372.12 = 21,512.17/x
  3. Step 3: Cross multiply
    40,242x = 60,372.12 × 21,512.17
  4. Step 4: Simplify right side
    40,242x = 1,298,735,201.14
  5. Step 5: Solve for x
    x = 1,298,735,201.14/40,242
  6. Step 6: Final answer
    x = 32,273.13

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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.