Finding the Fourth Proportional to 129,325.44, 193,990.32 and 40,576.80
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Solution
The fourth proportional to 129,325.44, 193,990.32 and 40,576.80 is: 60,865.88
Step by Step Solution
- Step 1: Write the proportion equation
129,325.44 : 193,990.32 = 40,576.80 : x - Step 2: Convert to fraction form
129,325.44/193,990.32 = 40,576.80/x - Step 3: Cross multiply
129,325.44x = 193,990.32 × 40,576.80 - Step 4: Simplify right side
129,325.44x = 7,871,506,416.58 - Step 5: Solve for x
x = 7,871,506,416.58/129,325.44 - Step 6: Final answer
x = 60,865.88
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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.