Finding the Fourth Proportional to 90,812.41, 125,317.97 and 49,972.72
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Solution
The fourth proportional to 90,812.41, 125,317.97 and 49,972.72 is: 68,960.61
Step by Step Solution
- Step 1: Write the proportion equation
90,812.41 : 125,317.97 = 49,972.72 : x - Step 2: Convert to fraction form
90,812.41/125,317.97 = 49,972.72/x - Step 3: Cross multiply
90,812.41x = 125,317.97 × 49,972.72 - Step 4: Simplify right side
90,812.41x = 6,262,479,575.91 - Step 5: Solve for x
x = 6,262,479,575.91/90,812.41 - Step 6: Final answer
x = 68,960.61
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1.5x scale
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.