Finding the Fourth Proportional to 86,485.64, 129,688.14 and 44,921.48
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Solution
The fourth proportional to 86,485.64, 129,688.14 and 44,921.48 is: 67,361.28
Step by Step Solution
- Step 1: Write the proportion equation
86,485.64 : 129,688.14 = 44,921.48 : x - Step 2: Convert to fraction form
86,485.64/129,688.14 = 44,921.48/x - Step 3: Cross multiply
86,485.64x = 129,688.14 × 44,921.48 - Step 4: Simplify right side
86,485.64x = 5,825,783,187.25 - Step 5: Solve for x
x = 5,825,783,187.25/86,485.64 - Step 6: Final answer
x = 67,361.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.