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Finding the Third Proportional to 21,008,889 and 45,698,742

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Solution

The third proportional to 21,008,889 and 45,698,742 is: 99,404,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008,889 : 45,698,742 = 45,698,742 : x
  2. Step 2: Convert to fraction form
    21,008,889/45,698,742 = 45,698,742/x
  3. Step 3: Cross multiply
    21,008,889x = 45,698,742 × 45,698,742
  4. Step 4: Simplify right side
    21,008,889x = 2,088,375,020,382,564
  5. Step 5: Solve for x
    x = 2,088,375,020,382,564/21,008,889
  6. Step 6: Final answer
    x = 99,404,353.10

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.