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Finding the Third Proportional to 31,191,790 and 69,555,554

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Solution

The third proportional to 31,191,790 and 69,555,554 is: 155,104,118.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,191,790 : 69,555,554 = 69,555,554 : x
  2. Step 2: Convert to fraction form
    31,191,790/69,555,554 = 69,555,554/x
  3. Step 3: Cross multiply
    31,191,790x = 69,555,554 × 69,555,554
  4. Step 4: Simplify right side
    31,191,790x = 4,837,975,092,246,916
  5. Step 5: Solve for x
    x = 4,837,975,092,246,916/31,191,790
  6. Step 6: Final answer
    x = 155,104,118.50

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.