Finding the Fourth Proportional to 91,717.21, 126,516.13 and 57,671.80
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Solution
The fourth proportional to 91,717.21, 126,516.13 and 57,671.80 is: 79,553.37
Step by Step Solution
- Step 1: Write the proportion equation
91,717.21 : 126,516.13 = 57,671.80 : x - Step 2: Convert to fraction form
91,717.21/126,516.13 = 57,671.80/x - Step 3: Cross multiply
91,717.21x = 126,516.13 × 57,671.80 - Step 4: Simplify right side
91,717.21x = 7,296,412,946.13 - Step 5: Solve for x
x = 7,296,412,946.13/91,717.21 - Step 6: Final answer
x = 79,553.37
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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.