Finding the Fourth Proportional to 74,592.90, 102,975.30 and 49,115.70
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Solution
The fourth proportional to 74,592.90, 102,975.30 and 49,115.70 is: 67,804.09
Step by Step Solution
- Step 1: Write the proportion equation
74,592.90 : 102,975.30 = 49,115.70 : x - Step 2: Convert to fraction form
74,592.90/102,975.30 = 49,115.70/x - Step 3: Cross multiply
74,592.90x = 102,975.30 × 49,115.70 - Step 4: Simplify right side
74,592.90x = 5,057,703,942.21 - Step 5: Solve for x
x = 5,057,703,942.21/74,592.90 - Step 6: Final answer
x = 67,804.09
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1.5x scale
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.