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Finding the Third Proportional to 66,612,279 and 99,918,408

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Solution

The third proportional to 66,612,279 and 99,918,408 is: 149,877,596.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,612,279 : 99,918,408 = 99,918,408 : x
  2. Step 2: Convert to fraction form
    66,612,279/99,918,408 = 99,918,408/x
  3. Step 3: Cross multiply
    66,612,279x = 99,918,408 × 99,918,408
  4. Step 4: Simplify right side
    66,612,279x = 9,983,688,257,254,464
  5. Step 5: Solve for x
    x = 9,983,688,257,254,464/66,612,279
  6. Step 6: Final answer
    x = 149,877,596.25

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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.