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Finding the Third Proportional to 50,685,980 and 78,519,236

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Solution

The third proportional to 50,685,980 and 78,519,236 is: 121,636,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,685,980 : 78,519,236 = 78,519,236 : x
  2. Step 2: Convert to fraction form
    50,685,980/78,519,236 = 78,519,236/x
  3. Step 3: Cross multiply
    50,685,980x = 78,519,236 × 78,519,236
  4. Step 4: Simplify right side
    50,685,980x = 6,165,270,422,023,696
  5. Step 5: Solve for x
    x = 6,165,270,422,023,696/50,685,980
  6. Step 6: Final answer
    x = 121,636,602.90

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.