Finding the Fourth Proportional to 91,135.62, 125,758.44 and 55,345.23
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Solution
The fourth proportional to 91,135.62, 125,758.44 and 55,345.23 is: 76,371.12
Step by Step Solution
- Step 1: Write the proportion equation
91,135.62 : 125,758.44 = 55,345.23 : x - Step 2: Convert to fraction form
91,135.62/125,758.44 = 55,345.23/x - Step 3: Cross multiply
91,135.62x = 125,758.44 × 55,345.23 - Step 4: Simplify right side
91,135.62x = 6,960,129,786.24 - Step 5: Solve for x
x = 6,960,129,786.24/91,135.62 - Step 6: Final answer
x = 76,371.12
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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.