Finding the Fourth Proportional to 90,180, 135,288.46 and 31,007.99
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Solution
The fourth proportional to 90,180, 135,288.46 and 31,007.99 is: 46,518.33
Step by Step Solution
- Step 1: Write the proportion equation
90,180 : 135,288.46 = 31,007.99 : x - Step 2: Convert to fraction form
90,180/135,288.46 = 31,007.99/x - Step 3: Cross multiply
90,180x = 135,288.46 × 31,007.99 - Step 4: Simplify right side
90,180x = 4,195,023,214.80 - Step 5: Solve for x
x = 4,195,023,214.80/90,180 - Step 6: Final answer
x = 46,518.33
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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.