Finding the Fourth Proportional to 112,912.08, 155,796.58 and 66,963.21
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Solution
The fourth proportional to 112,912.08, 155,796.58 and 66,963.21 is: 92,396.12
Step by Step Solution
- Step 1: Write the proportion equation
112,912.08 : 155,796.58 = 66,963.21 : x - Step 2: Convert to fraction form
112,912.08/155,796.58 = 66,963.21/x - Step 3: Cross multiply
112,912.08x = 155,796.58 × 66,963.21 - Step 4: Simplify right side
112,912.08x = 10,432,637,990.02 - Step 5: Solve for x
x = 10,432,637,990.02/112,912.08 - Step 6: Final answer
x = 92,396.12
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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.