Finding the Fourth Proportional to 86,485.98, 129,634.20 and 33,837.60
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Solution
The fourth proportional to 86,485.98, 129,634.20 and 33,837.60 is: 50,719.32
Step by Step Solution
- Step 1: Write the proportion equation
86,485.98 : 129,634.20 = 33,837.60 : x - Step 2: Convert to fraction form
86,485.98/129,634.20 = 33,837.60/x - Step 3: Cross multiply
86,485.98x = 129,634.20 × 33,837.60 - Step 4: Simplify right side
86,485.98x = 4,386,510,205.92 - Step 5: Solve for x
x = 4,386,510,205.92/86,485.98 - Step 6: Final answer
x = 50,719.32
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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.