Finding the Fourth Proportional to 75,709.62, 113,418.87 and 42,328.44
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Solution
The fourth proportional to 75,709.62, 113,418.87 and 42,328.44 is: 63,411.28
Step by Step Solution
- Step 1: Write the proportion equation
75,709.62 : 113,418.87 = 42,328.44 : x - Step 2: Convert to fraction form
75,709.62/113,418.87 = 42,328.44/x - Step 3: Cross multiply
75,709.62x = 113,418.87 × 42,328.44 - Step 4: Simplify right side
75,709.62x = 4,800,843,833.66 - Step 5: Solve for x
x = 4,800,843,833.66/75,709.62 - Step 6: Final answer
x = 63,411.28
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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.