Finding the Fourth Proportional to 78,646.62, 108,551.94 and 48,457.80
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Solution
The fourth proportional to 78,646.62, 108,551.94 and 48,457.80 is: 66,883.84
Step by Step Solution
- Step 1: Write the proportion equation
78,646.62 : 108,551.94 = 48,457.80 : x - Step 2: Convert to fraction form
78,646.62/108,551.94 = 48,457.80/x - Step 3: Cross multiply
78,646.62x = 108,551.94 × 48,457.80 - Step 4: Simplify right side
78,646.62x = 5,260,188,198.13 - Step 5: Solve for x
x = 5,260,188,198.13/78,646.62 - Step 6: Final answer
x = 66,883.84
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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.