Finding the Fourth Proportional to 115,657.20, 173,485.80 and 40,861.80
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Solution
The fourth proportional to 115,657.20, 173,485.80 and 40,861.80 is: 61,292.70
Step by Step Solution
- Step 1: Write the proportion equation
115,657.20 : 173,485.80 = 40,861.80 : x - Step 2: Convert to fraction form
115,657.20/173,485.80 = 40,861.80/x - Step 3: Cross multiply
115,657.20x = 173,485.80 × 40,861.80 - Step 4: Simplify right side
115,657.20x = 7,088,942,062.44 - Step 5: Solve for x
x = 7,088,942,062.44/115,657.20 - Step 6: Final answer
x = 61,292.70
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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.