Finding the Fourth Proportional to 85,543.18, 128,245.44 and 35,660.68
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Solution
The fourth proportional to 85,543.18, 128,245.44 and 35,660.68 is: 53,462.12
Step by Step Solution
- Step 1: Write the proportion equation
85,543.18 : 128,245.44 = 35,660.68 : x - Step 2: Convert to fraction form
85,543.18/128,245.44 = 35,660.68/x - Step 3: Cross multiply
85,543.18x = 128,245.44 × 35,660.68 - Step 4: Simplify right side
85,543.18x = 4,573,319,597.30 - Step 5: Solve for x
x = 4,573,319,597.30/85,543.18 - Step 6: Final answer
x = 53,462.12
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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.