Finding the Fourth Proportional to 74,630.42, 102,969.60 and 51,943.94
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Solution
The fourth proportional to 74,630.42, 102,969.60 and 51,943.94 is: 71,668.45
Step by Step Solution
- Step 1: Write the proportion equation
74,630.42 : 102,969.60 = 51,943.94 : x - Step 2: Convert to fraction form
74,630.42/102,969.60 = 51,943.94/x - Step 3: Cross multiply
74,630.42x = 102,969.60 × 51,943.94 - Step 4: Simplify right side
74,630.42x = 5,348,646,724.22 - Step 5: Solve for x
x = 5,348,646,724.22/74,630.42 - Step 6: Final answer
x = 71,668.45
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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.