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Finding the Third Proportional to 30,991,072 and 67,562,280

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Solution

The third proportional to 30,991,072 and 67,562,280 is: 147,289,570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,991,072 : 67,562,280 = 67,562,280 : x
  2. Step 2: Convert to fraction form
    30,991,072/67,562,280 = 67,562,280/x
  3. Step 3: Cross multiply
    30,991,072x = 67,562,280 × 67,562,280
  4. Step 4: Simplify right side
    30,991,072x = 4,564,661,678,798,400
  5. Step 5: Solve for x
    x = 4,564,661,678,798,400/30,991,072
  6. Step 6: Final answer
    x = 147,289,570.33

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These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.