Finding the Fourth Proportional to 106,338.68, 159,459.42 and 39,729.96
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Solution
The fourth proportional to 106,338.68, 159,459.42 and 39,729.96 is: 59,576.78
Step by Step Solution
- Step 1: Write the proportion equation
106,338.68 : 159,459.42 = 39,729.96 : x - Step 2: Convert to fraction form
106,338.68/159,459.42 = 39,729.96/x - Step 3: Cross multiply
106,338.68x = 159,459.42 × 39,729.96 - Step 4: Simplify right side
106,338.68x = 6,335,316,378.22 - Step 5: Solve for x
x = 6,335,316,378.22/106,338.68 - Step 6: Final answer
x = 59,576.78
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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.