Finding the Fourth Proportional to 88,138.11, 121,630.37 and 47,851.55
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Solution
The fourth proportional to 88,138.11, 121,630.37 and 47,851.55 is: 66,035.02
Step by Step Solution
- Step 1: Write the proportion equation
88,138.11 : 121,630.37 = 47,851.55 : x - Step 2: Convert to fraction form
88,138.11/121,630.37 = 47,851.55/x - Step 3: Cross multiply
88,138.11x = 121,630.37 × 47,851.55 - Step 4: Simplify right side
88,138.11x = 5,820,201,731.57 - Step 5: Solve for x
x = 5,820,201,731.57/88,138.11 - Step 6: Final answer
x = 66,035.02
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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.