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Finding the Third Proportional to 18,676,890 and 40,896,828

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Solution

The third proportional to 18,676,890 and 40,896,828 is: 89,551,876.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676,890 : 40,896,828 = 40,896,828 : x
  2. Step 2: Convert to fraction form
    18,676,890/40,896,828 = 40,896,828/x
  3. Step 3: Cross multiply
    18,676,890x = 40,896,828 × 40,896,828
  4. Step 4: Simplify right side
    18,676,890x = 1,672,550,540,461,584
  5. Step 5: Solve for x
    x = 1,672,550,540,461,584/18,676,890
  6. Step 6: Final answer
    x = 89,551,876.17

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.