Finding the Fourth Proportional to 68,286,675.40, 94,229,715.78 and 38,515,684.36
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Solution
The fourth proportional to 68,286,675.40, 94,229,715.78 and 38,515,684.36 is: 53,148,318.75
Step by Step Solution
- Step 1: Write the proportion equation
68,286,675.40 : 94,229,715.78 = 38,515,684.36 : x - Step 2: Convert to fraction form
68,286,675.40/94,229,715.78 = 38,515,684.36/x - Step 3: Cross multiply
68,286,675.40x = 94,229,715.78 × 38,515,684.36 - Step 4: Simplify right side
68,286,675.40x = 3,629,321,990,314,991 - Step 5: Solve for x
x = 3,629,321,990,314,991/68,286,675.40 - Step 6: Final answer
x = 53,148,318.75
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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.