Finding the Fourth Proportional to 117,428.13, 162,046.09 and 63,711.09
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Solution
The fourth proportional to 117,428.13, 162,046.09 and 63,711.09 is: 87,918.74
Step by Step Solution
- Step 1: Write the proportion equation
117,428.13 : 162,046.09 = 63,711.09 : x - Step 2: Convert to fraction form
117,428.13/162,046.09 = 63,711.09/x - Step 3: Cross multiply
117,428.13x = 162,046.09 × 63,711.09 - Step 4: Simplify right side
117,428.13x = 10,324,133,024.14 - Step 5: Solve for x
x = 10,324,133,024.14/117,428.13 - Step 6: Final answer
x = 87,918.74
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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.