Finding the Fourth Proportional to 57,661,163.21, 79,571,342.35 and 31,555,157.45
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Solution
The fourth proportional to 57,661,163.21, 79,571,342.35 and 31,555,157.45 is: 43,545,535.61
Step by Step Solution
- Step 1: Write the proportion equation
57,661,163.21 : 79,571,342.35 = 31,555,157.45 : x - Step 2: Convert to fraction form
57,661,163.21/79,571,342.35 = 31,555,157.45/x - Step 3: Cross multiply
57,661,163.21x = 79,571,342.35 × 31,555,157.45 - Step 4: Simplify right side
57,661,163.21x = 2,510,886,236,003,690 - Step 5: Solve for x
x = 2,510,886,236,003,690/57,661,163.21 - Step 6: Final answer
x = 43,545,535.61
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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.