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Finding the Third Proportional to 66,613,988.25 and 99,920,651.63

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Solution

The third proportional to 66,613,988.25 and 99,920,651.63 is: 149,880,481.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,613,988.25 : 99,920,651.63 = 99,920,651.63 : x
  2. Step 2: Convert to fraction form
    66,613,988.25/99,920,651.63 = 99,920,651.63/x
  3. Step 3: Cross multiply
    66,613,988.25x = 99,920,651.63 × 99,920,651.63
  4. Step 4: Simplify right side
    66,613,988.25x = 9,984,136,621,164,616
  5. Step 5: Solve for x
    x = 9,984,136,621,164,616/66,613,988.25
  6. Step 6: Final answer
    x = 149,880,481.31

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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.