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Finding the Third Proportional to 20,590 and 43,840

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Solution

The third proportional to 20,590 and 43,840 is: 93,343.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590 : 43,840 = 43,840 : x
  2. Step 2: Convert to fraction form
    20,590/43,840 = 43,840/x
  3. Step 3: Cross multiply
    20,590x = 43,840 × 43,840
  4. Step 4: Simplify right side
    20,590x = 1,921,945,600
  5. Step 5: Solve for x
    x = 1,921,945,600/20,590
  6. Step 6: Final answer
    x = 93,343.64

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.