Finding the Fourth Proportional to 100,577.28, 138,682.76 and 64,230.96
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Solution
The fourth proportional to 100,577.28, 138,682.76 and 64,230.96 is: 88,565.99
Step by Step Solution
- Step 1: Write the proportion equation
100,577.28 : 138,682.76 = 64,230.96 : x - Step 2: Convert to fraction form
100,577.28/138,682.76 = 64,230.96/x - Step 3: Cross multiply
100,577.28x = 138,682.76 × 64,230.96 - Step 4: Simplify right side
100,577.28x = 8,907,726,810.25 - Step 5: Solve for x
x = 8,907,726,810.25/100,577.28 - Step 6: Final answer
x = 88,565.99
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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.