Finding the Fourth Proportional to 71,176.69, 106,762.95 and 18,586.18
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Solution
The fourth proportional to 71,176.69, 106,762.95 and 18,586.18 is: 27,878.72
Step by Step Solution
- Step 1: Write the proportion equation
71,176.69 : 106,762.95 = 18,586.18 : x - Step 2: Convert to fraction form
71,176.69/106,762.95 = 18,586.18/x - Step 3: Cross multiply
71,176.69x = 106,762.95 × 18,586.18 - Step 4: Simplify right side
71,176.69x = 1,984,314,872.22 - Step 5: Solve for x
x = 1,984,314,872.22/71,176.69 - Step 6: Final answer
x = 27,878.72
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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.