Finding the Fourth Proportional to 112,912.68, 169,221.36 and 46,274.78
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Solution
The fourth proportional to 112,912.68, 169,221.36 and 46,274.78 is: 69,351.65
Step by Step Solution
- Step 1: Write the proportion equation
112,912.68 : 169,221.36 = 46,274.78 : x - Step 2: Convert to fraction form
112,912.68/169,221.36 = 46,274.78/x - Step 3: Cross multiply
112,912.68x = 169,221.36 × 46,274.78 - Step 4: Simplify right side
112,912.68x = 7,830,681,205.30 - Step 5: Solve for x
x = 7,830,681,205.30/112,912.68 - Step 6: Final answer
x = 69,351.65
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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.