Finding the Fourth Proportional to 77,891.99, 116,837.99 and 18,727.66
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Solution
The fourth proportional to 77,891.99, 116,837.99 and 18,727.66 is: 28,091.49
Step by Step Solution
- Step 1: Write the proportion equation
77,891.99 : 116,837.99 = 18,727.66 : x - Step 2: Convert to fraction form
77,891.99/116,837.99 = 18,727.66/x - Step 3: Cross multiply
77,891.99x = 116,837.99 × 18,727.66 - Step 4: Simplify right side
77,891.99x = 2,188,102,204.21 - Step 5: Solve for x
x = 2,188,102,204.21/77,891.99 - Step 6: Final answer
x = 28,091.49
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Double scale
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Similar ratio
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1.5x scale
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.