Finding the Fourth Proportional to 86,721.69, 119,678.27 and 48,995.13
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Solution
The fourth proportional to 86,721.69, 119,678.27 and 48,995.13 is: 67,614.60
Step by Step Solution
- Step 1: Write the proportion equation
86,721.69 : 119,678.27 = 48,995.13 : x - Step 2: Convert to fraction form
86,721.69/119,678.27 = 48,995.13/x - Step 3: Cross multiply
86,721.69x = 119,678.27 × 48,995.13 - Step 4: Simplify right side
86,721.69x = 5,863,652,151.85 - Step 5: Solve for x
x = 5,863,652,151.85/86,721.69 - Step 6: Final answer
x = 67,614.60
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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.