Finding the Fourth Proportional to 83,896.20, 115,774.92 and 48,107.28
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Solution
The fourth proportional to 83,896.20, 115,774.92 and 48,107.28 is: 66,386.99
Step by Step Solution
- Step 1: Write the proportion equation
83,896.20 : 115,774.92 = 48,107.28 : x - Step 2: Convert to fraction form
83,896.20/115,774.92 = 48,107.28/x - Step 3: Cross multiply
83,896.20x = 115,774.92 × 48,107.28 - Step 4: Simplify right side
83,896.20x = 5,569,616,493.42 - Step 5: Solve for x
x = 5,569,616,493.42/83,896.20 - Step 6: Final answer
x = 66,386.99
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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.