Finding the Fourth Proportional to 129,611.42, 194,418.06 and 40,872.08
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Solution
The fourth proportional to 129,611.42, 194,418.06 and 40,872.08 is: 61,308.41
Step by Step Solution
- Step 1: Write the proportion equation
129,611.42 : 194,418.06 = 40,872.08 : x - Step 2: Convert to fraction form
129,611.42/194,418.06 = 40,872.08/x - Step 3: Cross multiply
129,611.42x = 194,418.06 × 40,872.08 - Step 4: Simplify right side
129,611.42x = 7,946,270,501.76 - Step 5: Solve for x
x = 7,946,270,501.76/129,611.42 - Step 6: Final answer
x = 61,308.41
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.