Finding the Fourth Proportional to 67,318.49, 100,998.25 and 31,807.08
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Solution
The fourth proportional to 67,318.49, 100,998.25 and 31,807.08 is: 47,720.31
Step by Step Solution
- Step 1: Write the proportion equation
67,318.49 : 100,998.25 = 31,807.08 : x - Step 2: Convert to fraction form
67,318.49/100,998.25 = 31,807.08/x - Step 3: Cross multiply
67,318.49x = 100,998.25 × 31,807.08 - Step 4: Simplify right side
67,318.49x = 3,212,459,338.09 - Step 5: Solve for x
x = 3,212,459,338.09/67,318.49 - Step 6: Final answer
x = 47,720.31
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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.