Finding the Fourth Proportional to 85,940.70, 128,896.17 and 23,596.62
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Solution
The fourth proportional to 85,940.70, 128,896.17 and 23,596.62 is: 35,390.84
Step by Step Solution
- Step 1: Write the proportion equation
85,940.70 : 128,896.17 = 23,596.62 : x - Step 2: Convert to fraction form
85,940.70/128,896.17 = 23,596.62/x - Step 3: Cross multiply
85,940.70x = 128,896.17 × 23,596.62 - Step 4: Simplify right side
85,940.70x = 3,041,513,942.95 - Step 5: Solve for x
x = 3,041,513,942.95/85,940.70 - Step 6: Final answer
x = 35,390.84
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1.5x scale
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.