Finding the Fourth Proportional to 128,747.05, 193,120.94 and 40,013.53
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Solution
The fourth proportional to 128,747.05, 193,120.94 and 40,013.53 is: 60,020.41
Step by Step Solution
- Step 1: Write the proportion equation
128,747.05 : 193,120.94 = 40,013.53 : x - Step 2: Convert to fraction form
128,747.05/193,120.94 = 40,013.53/x - Step 3: Cross multiply
128,747.05x = 193,120.94 × 40,013.53 - Step 4: Simplify right side
128,747.05x = 7,727,450,326.25 - Step 5: Solve for x
x = 7,727,450,326.25/128,747.05 - Step 6: Final answer
x = 60,020.41
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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.