Finding the Fourth Proportional to 90,450.51, 124,821.99 and 50,168.00
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Solution
The fourth proportional to 90,450.51, 124,821.99 and 50,168.00 is: 69,231.99
Step by Step Solution
- Step 1: Write the proportion equation
90,450.51 : 124,821.99 = 50,168.00 : x - Step 2: Convert to fraction form
90,450.51/124,821.99 = 50,168.00/x - Step 3: Cross multiply
90,450.51x = 124,821.99 × 50,168.00 - Step 4: Simplify right side
90,450.51x = 6,262,068,970.21 - Step 5: Solve for x
x = 6,262,068,970.21/90,450.51 - Step 6: Final answer
x = 69,231.99
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1.5x scale
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.