Finding the Fourth Proportional to 31,568,205, 43,571,402.84 and 18,519,655.80
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Solution
The fourth proportional to 31,568,205, 43,571,402.84 and 18,519,655.80 is: 25,561,395.82
Step by Step Solution
- Step 1: Write the proportion equation
31,568,205 : 43,571,402.84 = 18,519,655.80 : x - Step 2: Convert to fraction form
31,568,205/43,571,402.84 = 18,519,655.80/x - Step 3: Cross multiply
31,568,205x = 43,571,402.84 × 18,519,655.80 - Step 4: Simplify right side
31,568,205x = 806,927,383,319,942.62 - Step 5: Solve for x
x = 806,927,383,319,942.62/31,568,205 - Step 6: Final answer
x = 25,561,395.82
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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.