Finding the Fourth Proportional to 80,771.80, 121,157.70 and 41,315.80
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Solution
The fourth proportional to 80,771.80, 121,157.70 and 41,315.80 is: 61,973.70
Step by Step Solution
- Step 1: Write the proportion equation
80,771.80 : 121,157.70 = 41,315.80 : x - Step 2: Convert to fraction form
80,771.80/121,157.70 = 41,315.80/x - Step 3: Cross multiply
80,771.80x = 121,157.70 × 41,315.80 - Step 4: Simplify right side
80,771.80x = 5,005,727,301.66 - Step 5: Solve for x
x = 5,005,727,301.66/80,771.80 - Step 6: Final answer
x = 61,973.70
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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.