Finding the Fourth Proportional to 86,488.97, 129,728.79 and 33,206.49
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Solution
The fourth proportional to 86,488.97, 129,728.79 and 33,206.49 is: 49,807.95
Step by Step Solution
- Step 1: Write the proportion equation
86,488.97 : 129,728.79 = 33,206.49 : x - Step 2: Convert to fraction form
86,488.97/129,728.79 = 33,206.49/x - Step 3: Cross multiply
86,488.97x = 129,728.79 × 33,206.49 - Step 4: Simplify right side
86,488.97x = 4,307,837,767.85 - Step 5: Solve for x
x = 4,307,837,767.85/86,488.97 - Step 6: Final answer
x = 49,807.95
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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.