Finding the Fourth Proportional to 98,511.75, 135,946.22 and 53,799.75
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Solution
The fourth proportional to 98,511.75, 135,946.22 and 53,799.75 is: 74,243.66
Step by Step Solution
- Step 1: Write the proportion equation
98,511.75 : 135,946.22 = 53,799.75 : x - Step 2: Convert to fraction form
98,511.75/135,946.22 = 53,799.75/x - Step 3: Cross multiply
98,511.75x = 135,946.22 × 53,799.75 - Step 4: Simplify right side
98,511.75x = 7,313,872,380.45 - Step 5: Solve for x
x = 7,313,872,380.45/98,511.75 - Step 6: Final answer
x = 74,243.66
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1.5x scale
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.