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Finding the Third Proportional to 66,522 and 99,783

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Solution

The third proportional to 66,522 and 99,783 is: 149,674.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,522 : 99,783 = 99,783 : x
  2. Step 2: Convert to fraction form
    66,522/99,783 = 99,783/x
  3. Step 3: Cross multiply
    66,522x = 99,783 × 99,783
  4. Step 4: Simplify right side
    66,522x = 9,956,647,089
  5. Step 5: Solve for x
    x = 9,956,647,089/66,522
  6. Step 6: Final answer
    x = 149,674.50

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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.