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Finding the Third Proportional to 40,388,690 and 86,935,972

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Solution

The third proportional to 40,388,690 and 86,935,972 is: 187,128,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,388,690 : 86,935,972 = 86,935,972 : x
  2. Step 2: Convert to fraction form
    40,388,690/86,935,972 = 86,935,972/x
  3. Step 3: Cross multiply
    40,388,690x = 86,935,972 × 86,935,972
  4. Step 4: Simplify right side
    40,388,690x = 7,557,863,227,584,784
  5. Step 5: Solve for x
    x = 7,557,863,227,584,784/40,388,690
  6. Step 6: Final answer
    x = 187,128,209.10

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.