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Finding the Third Proportional to 20,055,979 and 31,003,985

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Solution

The third proportional to 20,055,979 and 31,003,985 is: 47,928,205.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,055,979 : 31,003,985 = 31,003,985 : x
  2. Step 2: Convert to fraction form
    20,055,979/31,003,985 = 31,003,985/x
  3. Step 3: Cross multiply
    20,055,979x = 31,003,985 × 31,003,985
  4. Step 4: Simplify right side
    20,055,979x = 961,247,085,880,225
  5. Step 5: Solve for x
    x = 961,247,085,880,225/20,055,979
  6. Step 6: Final answer
    x = 47,928,205.64

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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.