Finding the Fourth Proportional to 88,388.31, 121,972.23 and 48,102.15
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Solution
The fourth proportional to 88,388.31, 121,972.23 and 48,102.15 is: 66,378.99
Step by Step Solution
- Step 1: Write the proportion equation
88,388.31 : 121,972.23 = 48,102.15 : x - Step 2: Convert to fraction form
88,388.31/121,972.23 = 48,102.15/x - Step 3: Cross multiply
88,388.31x = 121,972.23 × 48,102.15 - Step 4: Simplify right side
88,388.31x = 5,867,126,960.69 - Step 5: Solve for x
x = 5,867,126,960.69/88,388.31 - Step 6: Final answer
x = 66,378.99
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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.