Finding the Fourth Proportional to 74,326.65, 102,571.05 and 40,335.13
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Solution
The fourth proportional to 74,326.65, 102,571.05 and 40,335.13 is: 55,662.62
Step by Step Solution
- Step 1: Write the proportion equation
74,326.65 : 102,571.05 = 40,335.13 : x - Step 2: Convert to fraction form
74,326.65/102,571.05 = 40,335.13/x - Step 3: Cross multiply
74,326.65x = 102,571.05 × 40,335.13 - Step 4: Simplify right side
74,326.65x = 4,137,216,199.13 - Step 5: Solve for x
x = 4,137,216,199.13/74,326.65 - Step 6: Final answer
x = 55,662.62
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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.