Finding the Fourth Proportional to 115,619.42, 173,408.64 and 31,386.12
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Solution
The fourth proportional to 115,619.42, 173,408.64 and 31,386.12 is: 47,073.62
Step by Step Solution
- Step 1: Write the proportion equation
115,619.42 : 173,408.64 = 31,386.12 : x - Step 2: Convert to fraction form
115,619.42/173,408.64 = 31,386.12/x - Step 3: Cross multiply
115,619.42x = 173,408.64 × 31,386.12 - Step 4: Simplify right side
115,619.42x = 5,442,624,384.08 - Step 5: Solve for x
x = 5,442,624,384.08/115,619.42 - Step 6: Final answer
x = 47,073.62
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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.