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Finding the Third Proportional to 21,163,780 and 29,803,407

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Solution

The third proportional to 21,163,780 and 29,803,407 is: 41,969,963.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163,780 : 29,803,407 = 29,803,407 : x
  2. Step 2: Convert to fraction form
    21,163,780/29,803,407 = 29,803,407/x
  3. Step 3: Cross multiply
    21,163,780x = 29,803,407 × 29,803,407
  4. Step 4: Simplify right side
    21,163,780x = 888,243,068,807,649
  5. Step 5: Solve for x
    x = 888,243,068,807,649/21,163,780
  6. Step 6: Final answer
    x = 41,969,963.25

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.