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Finding the Third Proportional to 28,579 and 43,840

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Solution

The third proportional to 28,579 and 43,840 is: 67,250.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579 : 43,840 = 43,840 : x
  2. Step 2: Convert to fraction form
    28,579/43,840 = 43,840/x
  3. Step 3: Cross multiply
    28,579x = 43,840 × 43,840
  4. Step 4: Simplify right side
    28,579x = 1,921,945,600
  5. Step 5: Solve for x
    x = 1,921,945,600/28,579
  6. Step 6: Final answer
    x = 67,250.27

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.