Finding the Fourth Proportional to 80,988.09, 121,484.98 and 21,825.18
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Solution
The fourth proportional to 80,988.09, 121,484.98 and 21,825.18 is: 32,738.54
Step by Step Solution
- Step 1: Write the proportion equation
80,988.09 : 121,484.98 = 21,825.18 : x - Step 2: Convert to fraction form
80,988.09/121,484.98 = 21,825.18/x - Step 3: Cross multiply
80,988.09x = 121,484.98 × 21,825.18 - Step 4: Simplify right side
80,988.09x = 2,651,431,583.08 - Step 5: Solve for x
x = 2,651,431,583.08/80,988.09 - Step 6: Final answer
x = 32,738.54
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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.