Finding the Fourth Proportional to 88,137.75, 121,630.10 and 48,393.75
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Solution
The fourth proportional to 88,137.75, 121,630.10 and 48,393.75 is: 66,783.38
Step by Step Solution
- Step 1: Write the proportion equation
88,137.75 : 121,630.10 = 48,393.75 : x - Step 2: Convert to fraction form
88,137.75/121,630.10 = 48,393.75/x - Step 3: Cross multiply
88,137.75x = 121,630.10 × 48,393.75 - Step 4: Simplify right side
88,137.75x = 5,886,136,409.91 - Step 5: Solve for x
x = 5,886,136,409.91/88,137.75 - Step 6: Final answer
x = 66,783.38
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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.