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Finding the Third Proportional to 28,359 and 43,530

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Solution

The third proportional to 28,359 and 43,530 is: 66,816.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359 : 43,530 = 43,530 : x
  2. Step 2: Convert to fraction form
    28,359/43,530 = 43,530/x
  3. Step 3: Cross multiply
    28,359x = 43,530 × 43,530
  4. Step 4: Simplify right side
    28,359x = 1,894,860,900
  5. Step 5: Solve for x
    x = 1,894,860,900/28,359
  6. Step 6: Final answer
    x = 66,816.92

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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.