Finding the Fourth Proportional to 74,747.70, 112,121.96 and 19,343.70
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Solution
The fourth proportional to 74,747.70, 112,121.96 and 19,343.70 is: 29,015.66
Step by Step Solution
- Step 1: Write the proportion equation
74,747.70 : 112,121.96 = 19,343.70 : x - Step 2: Convert to fraction form
74,747.70/112,121.96 = 19,343.70/x - Step 3: Cross multiply
74,747.70x = 112,121.96 × 19,343.70 - Step 4: Simplify right side
74,747.70x = 2,168,853,557.65 - Step 5: Solve for x
x = 2,168,853,557.65/74,747.70 - Step 6: Final answer
x = 29,015.66
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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.