Finding the Fourth Proportional to 76,629.92, 105,763.88 and 47,962.94
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Solution
The fourth proportional to 76,629.92, 105,763.88 and 47,962.94 is: 66,197.99
Step by Step Solution
- Step 1: Write the proportion equation
76,629.92 : 105,763.88 = 47,962.94 : x - Step 2: Convert to fraction form
76,629.92/105,763.88 = 47,962.94/x - Step 3: Cross multiply
76,629.92x = 105,763.88 × 47,962.94 - Step 4: Simplify right side
76,629.92x = 5,072,746,221.70 - Step 5: Solve for x
x = 5,072,746,221.70/76,629.92 - Step 6: Final answer
x = 66,197.99
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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.