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Finding the Third Proportional to 66,992,872 and 145,115,224

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Solution

The third proportional to 66,992,872 and 145,115,224 is: 314,338,340.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,992,872 : 145,115,224 = 145,115,224 : x
  2. Step 2: Convert to fraction form
    66,992,872/145,115,224 = 145,115,224/x
  3. Step 3: Cross multiply
    66,992,872x = 145,115,224 × 145,115,224
  4. Step 4: Simplify right side
    66,992,872x = 21,058,428,236,570,176
  5. Step 5: Solve for x
    x = 21,058,428,236,570,176/66,992,872
  6. Step 6: Final answer
    x = 314,338,340.90

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.