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Finding the Third Proportional to 66,930 and 97,879

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Solution

The third proportional to 66,930 and 97,879 is: 143,139.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,930 : 97,879 = 97,879 : x
  2. Step 2: Convert to fraction form
    66,930/97,879 = 97,879/x
  3. Step 3: Cross multiply
    66,930x = 97,879 × 97,879
  4. Step 4: Simplify right side
    66,930x = 9,580,298,641
  5. Step 5: Solve for x
    x = 9,580,298,641/66,930
  6. Step 6: Final answer
    x = 143,139.08

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.