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Finding the Third Proportional to 30,715,962 and 66,358,020

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Solution

The third proportional to 30,715,962 and 66,358,020 is: 143,358,258.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,715,962 : 66,358,020 = 66,358,020 : x
  2. Step 2: Convert to fraction form
    30,715,962/66,358,020 = 66,358,020/x
  3. Step 3: Cross multiply
    30,715,962x = 66,358,020 × 66,358,020
  4. Step 4: Simplify right side
    30,715,962x = 4,403,386,818,320,400
  5. Step 5: Solve for x
    x = 4,403,386,818,320,400/30,715,962
  6. Step 6: Final answer
    x = 143,358,258.43

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.