Finding the Fourth Proportional to 87,971.55, 121,416.99 and 50,245.80
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Solution
The fourth proportional to 87,971.55, 121,416.99 and 50,245.80 is: 69,348.49
Step by Step Solution
- Step 1: Write the proportion equation
87,971.55 : 121,416.99 = 50,245.80 : x - Step 2: Convert to fraction form
87,971.55/121,416.99 = 50,245.80/x - Step 3: Cross multiply
87,971.55x = 121,416.99 × 50,245.80 - Step 4: Simplify right side
87,971.55x = 6,100,693,796.14 - Step 5: Solve for x
x = 6,100,693,796.14/87,971.55 - Step 6: Final answer
x = 69,348.49
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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.