Finding the Fourth Proportional to 88,274.21, 121,820.76 and 47,990.68
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Solution
The fourth proportional to 88,274.21, 121,820.76 and 47,990.68 is: 66,228.42
Step by Step Solution
- Step 1: Write the proportion equation
88,274.21 : 121,820.76 = 47,990.68 : x - Step 2: Convert to fraction form
88,274.21/121,820.76 = 47,990.68/x - Step 3: Cross multiply
88,274.21x = 121,820.76 × 47,990.68 - Step 4: Simplify right side
88,274.21x = 5,846,260,805.96 - Step 5: Solve for x
x = 5,846,260,805.96/88,274.21 - Step 6: Final answer
x = 66,228.42
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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.