Finding the Fourth Proportional to 81,517.68, 112,495.55 and 49,247.80
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Solution
The fourth proportional to 81,517.68, 112,495.55 and 49,247.80 is: 67,962.65
Step by Step Solution
- Step 1: Write the proportion equation
81,517.68 : 112,495.55 = 49,247.80 : x - Step 2: Convert to fraction form
81,517.68/112,495.55 = 49,247.80/x - Step 3: Cross multiply
81,517.68x = 112,495.55 × 49,247.80 - Step 4: Simplify right side
81,517.68x = 5,540,157,819.81 - Step 5: Solve for x
x = 5,540,157,819.81/81,517.68 - Step 6: Final answer
x = 67,962.65
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1.5x scale
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.