Finding the Fourth Proportional to 74,112.99, 102,275.90 and 40,121.45
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Solution
The fourth proportional to 74,112.99, 102,275.90 and 40,121.45 is: 55,367.59
Step by Step Solution
- Step 1: Write the proportion equation
74,112.99 : 102,275.90 = 40,121.45 : x - Step 2: Convert to fraction form
74,112.99/102,275.90 = 40,121.45/x - Step 3: Cross multiply
74,112.99x = 102,275.90 × 40,121.45 - Step 4: Simplify right side
74,112.99x = 4,103,457,764.05 - Step 5: Solve for x
x = 4,103,457,764.05/74,112.99 - Step 6: Final answer
x = 55,367.59
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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.