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Finding the Third Proportional to 21,008,813 and 45,698,590

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Solution

The third proportional to 21,008,813 and 45,698,590 is: 99,404,051.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008,813 : 45,698,590 = 45,698,590 : x
  2. Step 2: Convert to fraction form
    21,008,813/45,698,590 = 45,698,590/x
  3. Step 3: Cross multiply
    21,008,813x = 45,698,590 × 45,698,590
  4. Step 4: Simplify right side
    21,008,813x = 2,088,361,127,988,100
  5. Step 5: Solve for x
    x = 2,088,361,127,988,100/21,008,813
  6. Step 6: Final answer
    x = 99,404,051.43

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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.