Finding the Fourth Proportional to 31,394,858, 43,315,167.12 and 18,332,694.32
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Solution
The fourth proportional to 31,394,858, 43,315,167.12 and 18,332,694.32 is: 25,293,432.39
Step by Step Solution
- Step 1: Write the proportion equation
31,394,858 : 43,315,167.12 = 18,332,694.32 : x - Step 2: Convert to fraction form
31,394,858/43,315,167.12 = 18,332,694.32/x - Step 3: Cross multiply
31,394,858x = 43,315,167.12 × 18,332,694.32 - Step 4: Simplify right side
31,394,858x = 794,083,718,230,674.75 - Step 5: Solve for x
x = 794,083,718,230,674.75/31,394,858 - Step 6: Final answer
x = 25,293,432.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.