Finding the Fourth Proportional to 89,811.49, 134,629.21 and 76,514.53
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Solution
The fourth proportional to 89,811.49, 134,629.21 and 76,514.53 is: 114,696.80
Step by Step Solution
- Step 1: Write the proportion equation
89,811.49 : 134,629.21 = 76,514.53 : x - Step 2: Convert to fraction form
89,811.49/134,629.21 = 76,514.53/x - Step 3: Cross multiply
89,811.49x = 134,629.21 × 76,514.53 - Step 4: Simplify right side
89,811.49x = 10,301,090,727.42 - Step 5: Solve for x
x = 10,301,090,727.42/89,811.49 - Step 6: Final answer
x = 114,696.80
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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.