Finding the Fourth Proportional to 88,144.77, 121,639.11 and 47,857.74
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Solution
The fourth proportional to 88,144.77, 121,639.11 and 47,857.74 is: 66,043.32
Step by Step Solution
- Step 1: Write the proportion equation
88,144.77 : 121,639.11 = 47,857.74 : x - Step 2: Convert to fraction form
88,144.77/121,639.11 = 47,857.74/x - Step 3: Cross multiply
88,144.77x = 121,639.11 × 47,857.74 - Step 4: Simplify right side
88,144.77x = 5,821,372,900.21 - Step 5: Solve for x
x = 5,821,372,900.21/88,144.77 - Step 6: Final answer
x = 66,043.32
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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.