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Finding the Third Proportional to 66,509 and 97,819

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Solution

The third proportional to 66,509 and 97,819 is: 143,868.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,509 : 97,819 = 97,819 : x
  2. Step 2: Convert to fraction form
    66,509/97,819 = 97,819/x
  3. Step 3: Cross multiply
    66,509x = 97,819 × 97,819
  4. Step 4: Simplify right side
    66,509x = 9,568,556,761
  5. Step 5: Solve for x
    x = 9,568,556,761/66,509
  6. Step 6: Final answer
    x = 143,868.60

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.