Finding the Fourth Proportional to 90,368.84, 135,571.38 and 31,206.68
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Solution
The fourth proportional to 90,368.84, 135,571.38 and 31,206.68 is: 46,816.28
Step by Step Solution
- Step 1: Write the proportion equation
90,368.84 : 135,571.38 = 31,206.68 : x - Step 2: Convert to fraction form
90,368.84/135,571.38 = 31,206.68/x - Step 3: Cross multiply
90,368.84x = 135,571.38 × 31,206.68 - Step 4: Simplify right side
90,368.84x = 4,230,732,672.82 - Step 5: Solve for x
x = 4,230,732,672.82/90,368.84 - Step 6: Final answer
x = 46,816.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.