Finding the Fourth Proportional to 75,349.91, 103,988.07 and 49,811.99
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Solution
The fourth proportional to 75,349.91, 103,988.07 and 49,811.99 is: 68,743.98
Step by Step Solution
- Step 1: Write the proportion equation
75,349.91 : 103,988.07 = 49,811.99 : x - Step 2: Convert to fraction form
75,349.91/103,988.07 = 49,811.99/x - Step 3: Cross multiply
75,349.91x = 103,988.07 × 49,811.99 - Step 4: Simplify right side
75,349.91x = 5,179,852,183.02 - Step 5: Solve for x
x = 5,179,852,183.02/75,349.91 - Step 6: Final answer
x = 68,743.98
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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.