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Finding the Third Proportional to 30,856,040 and 66,355,810

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Solution

The third proportional to 30,856,040 and 66,355,810 is: 142,697,945.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,856,040 : 66,355,810 = 66,355,810 : x
  2. Step 2: Convert to fraction form
    30,856,040/66,355,810 = 66,355,810/x
  3. Step 3: Cross multiply
    30,856,040x = 66,355,810 × 66,355,810
  4. Step 4: Simplify right side
    30,856,040x = 4,403,093,520,756,100
  5. Step 5: Solve for x
    x = 4,403,093,520,756,100/30,856,040
  6. Step 6: Final answer
    x = 142,697,945.71

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.