Finding the Fourth Proportional to 91,171.53, 125,699.75 and 74,758.26
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Solution
The fourth proportional to 91,171.53, 125,699.75 and 74,758.26 is: 103,070.49
Step by Step Solution
- Step 1: Write the proportion equation
91,171.53 : 125,699.75 = 74,758.26 : x - Step 2: Convert to fraction form
91,171.53/125,699.75 = 74,758.26/x - Step 3: Cross multiply
91,171.53x = 125,699.75 × 74,758.26 - Step 4: Simplify right side
91,171.53x = 9,397,094,091.29 - Step 5: Solve for x
x = 9,397,094,091.29/91,171.53 - Step 6: Final answer
x = 103,070.49
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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.