Finding the Fourth Proportional to 78,872.44, 117,704.99 and 70,457.95
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Solution
The fourth proportional to 78,872.44, 117,704.99 and 70,457.95 is: 105,147.66
Step by Step Solution
- Step 1: Write the proportion equation
78,872.44 : 117,704.99 = 70,457.95 : x - Step 2: Convert to fraction form
78,872.44/117,704.99 = 70,457.95/x - Step 3: Cross multiply
78,872.44x = 117,704.99 × 70,457.95 - Step 4: Simplify right side
78,872.44x = 8,293,252,300.17 - Step 5: Solve for x
x = 8,293,252,300.17/78,872.44 - Step 6: Final answer
x = 105,147.66
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.