Finding the Fourth Proportional to 31,568,187.51, 43,571,378.66 and 18,519,638.31
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Solution
The fourth proportional to 31,568,187.51, 43,571,378.66 and 18,519,638.31 is: 25,561,371.65
Step by Step Solution
- Step 1: Write the proportion equation
31,568,187.51 : 43,571,378.66 = 18,519,638.31 : x - Step 2: Convert to fraction form
31,568,187.51/43,571,378.66 = 18,519,638.31/x - Step 3: Cross multiply
31,568,187.51x = 43,571,378.66 × 18,519,638.31 - Step 4: Simplify right side
31,568,187.51x = 806,926,173,358,654.25 - Step 5: Solve for x
x = 806,926,173,358,654.25/31,568,187.51 - Step 6: Final answer
x = 25,561,371.65
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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.