Finding the Fourth Proportional to 71,431.66, 107,136.96 and 18,844.84
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Solution
The fourth proportional to 71,431.66, 107,136.96 and 18,844.84 is: 28,264.48
Step by Step Solution
- Step 1: Write the proportion equation
71,431.66 : 107,136.96 = 18,844.84 : x - Step 2: Convert to fraction form
71,431.66/107,136.96 = 18,844.84/x - Step 3: Cross multiply
71,431.66x = 107,136.96 × 18,844.84 - Step 4: Simplify right side
71,431.66x = 2,018,978,869.29 - Step 5: Solve for x
x = 2,018,978,869.29/71,431.66 - Step 6: Final answer
x = 28,264.48
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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.