Finding the Fourth Proportional to 74,571.36, 102,905.34 and 40,579.98
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Solution
The fourth proportional to 74,571.36, 102,905.34 and 40,579.98 is: 55,998.67
Step by Step Solution
- Step 1: Write the proportion equation
74,571.36 : 102,905.34 = 40,579.98 : x - Step 2: Convert to fraction form
74,571.36/102,905.34 = 40,579.98/x - Step 3: Cross multiply
74,571.36x = 102,905.34 × 40,579.98 - Step 4: Simplify right side
74,571.36x = 4,175,896,639.09 - Step 5: Solve for x
x = 4,175,896,639.09/74,571.36 - Step 6: Final answer
x = 55,998.67
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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.