Finding the Fourth Proportional to 80,831.19, 121,270.79 and 41,415.99
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Solution
The fourth proportional to 80,831.19, 121,270.79 and 41,415.99 is: 62,136.28
Step by Step Solution
- Step 1: Write the proportion equation
80,831.19 : 121,270.79 = 41,415.99 : x - Step 2: Convert to fraction form
80,831.19/121,270.79 = 41,415.99/x - Step 3: Cross multiply
80,831.19x = 121,270.79 × 41,415.99 - Step 4: Simplify right side
80,831.19x = 5,022,549,618.85 - Step 5: Solve for x
x = 5,022,549,618.85/80,831.19 - Step 6: Final answer
x = 62,136.28
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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.