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Finding the Third Proportional to 18,814,866 and 39,890,550

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Solution

The third proportional to 18,814,866 and 39,890,550 is: 84,574,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814,866 : 39,890,550 = 39,890,550 : x
  2. Step 2: Convert to fraction form
    18,814,866/39,890,550 = 39,890,550/x
  3. Step 3: Cross multiply
    18,814,866x = 39,890,550 × 39,890,550
  4. Step 4: Simplify right side
    18,814,866x = 1,591,255,979,302,500
  5. Step 5: Solve for x
    x = 1,591,255,979,302,500/18,814,866
  6. Step 6: Final answer
    x = 84,574,398.74

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.