Finding the Fourth Proportional to 85,657.56, 128,454.42 and 29,481.96
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Solution
The fourth proportional to 85,657.56, 128,454.42 and 29,481.96 is: 44,211.95
Step by Step Solution
- Step 1: Write the proportion equation
85,657.56 : 128,454.42 = 29,481.96 : x - Step 2: Convert to fraction form
85,657.56/128,454.42 = 29,481.96/x - Step 3: Cross multiply
85,657.56x = 128,454.42 × 29,481.96 - Step 4: Simplify right side
85,657.56x = 3,787,088,072.26 - Step 5: Solve for x
x = 3,787,088,072.26/85,657.56 - Step 6: Final answer
x = 44,211.95
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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.