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Finding the Third Proportional to 66,613,994 and 99,920,661

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Solution

The third proportional to 66,613,994 and 99,920,661 is: 149,880,496.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,613,994 : 99,920,661 = 99,920,661 : x
  2. Step 2: Convert to fraction form
    66,613,994/99,920,661 = 99,920,661/x
  3. Step 3: Cross multiply
    66,613,994x = 99,920,661 × 99,920,661
  4. Step 4: Simplify right side
    66,613,994x = 9,984,138,494,676,920
  5. Step 5: Solve for x
    x = 9,984,138,494,676,920/66,613,994
  6. Step 6: Final answer
    x = 149,880,496.50

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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.