Finding the Fourth Proportional to 98,505.75, 135,937.94 and 53,793.75
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Solution
The fourth proportional to 98,505.75, 135,937.94 and 53,793.75 is: 74,235.38
Step by Step Solution
- Step 1: Write the proportion equation
98,505.75 : 135,937.94 = 53,793.75 : x - Step 2: Convert to fraction form
98,505.75/135,937.94 = 53,793.75/x - Step 3: Cross multiply
98,505.75x = 135,937.94 × 53,793.75 - Step 4: Simplify right side
98,505.75x = 7,312,611,290.91 - Step 5: Solve for x
x = 7,312,611,290.91/98,505.75 - Step 6: Final answer
x = 74,235.38
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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.