Finding the Fourth Proportional to 90,369.99, 135,552.93 and 31,200.09
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Solution
The fourth proportional to 90,369.99, 135,552.93 and 31,200.09 is: 46,799.43
Step by Step Solution
- Step 1: Write the proportion equation
90,369.99 : 135,552.93 = 31,200.09 : x - Step 2: Convert to fraction form
90,369.99/135,552.93 = 31,200.09/x - Step 3: Cross multiply
90,369.99x = 135,552.93 × 31,200.09 - Step 4: Simplify right side
90,369.99x = 4,229,263,615.76 - Step 5: Solve for x
x = 4,229,263,615.76/90,369.99 - Step 6: Final answer
x = 46,799.43
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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.