Finding the Fourth Proportional to 90,014.49, 124,217.60 and 49,721.75
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Solution
The fourth proportional to 90,014.49, 124,217.60 and 49,721.75 is: 68,614.68
Step by Step Solution
- Step 1: Write the proportion equation
90,014.49 : 124,217.60 = 49,721.75 : x - Step 2: Convert to fraction form
90,014.49/124,217.60 = 49,721.75/x - Step 3: Cross multiply
90,014.49x = 124,217.60 × 49,721.75 - Step 4: Simplify right side
90,014.49x = 6,176,315,583.10 - Step 5: Solve for x
x = 6,176,315,583.10/90,014.49 - Step 6: Final answer
x = 68,614.68
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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.