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Finding the Third Proportional to 19,920,890 and 29,311,695

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Solution

The third proportional to 19,920,890 and 29,311,695 is: 43,129,371.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920,890 : 29,311,695 = 29,311,695 : x
  2. Step 2: Convert to fraction form
    19,920,890/29,311,695 = 29,311,695/x
  3. Step 3: Cross multiply
    19,920,890x = 29,311,695 × 29,311,695
  4. Step 4: Simplify right side
    19,920,890x = 859,175,463,773,025
  5. Step 5: Solve for x
    x = 859,175,463,773,025/19,920,890
  6. Step 6: Final answer
    x = 43,129,371.42

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.