Finding the Fourth Proportional to 75,578.76, 104,178.60 and 63,455.31
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Solution
The fourth proportional to 75,578.76, 104,178.60 and 63,455.31 is: 87,467.50
Step by Step Solution
- Step 1: Write the proportion equation
75,578.76 : 104,178.60 = 63,455.31 : x - Step 2: Convert to fraction form
75,578.76/104,178.60 = 63,455.31/x - Step 3: Cross multiply
75,578.76x = 104,178.60 × 63,455.31 - Step 4: Simplify right side
75,578.76x = 6,610,685,358.37 - Step 5: Solve for x
x = 6,610,685,358.37/75,578.76 - Step 6: Final answer
x = 87,467.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.