Finding the Fourth Proportional to 74,509.76, 102,824.69 and 40,518.92
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Solution
The fourth proportional to 74,509.76, 102,824.69 and 40,518.92 is: 55,916.77
Step by Step Solution
- Step 1: Write the proportion equation
74,509.76 : 102,824.69 = 40,518.92 : x - Step 2: Convert to fraction form
74,509.76/102,824.69 = 40,518.92/x - Step 3: Cross multiply
74,509.76x = 102,824.69 × 40,518.92 - Step 4: Simplify right side
74,509.76x = 4,166,345,388.13 - Step 5: Solve for x
x = 4,166,345,388.13/74,509.76 - Step 6: Final answer
x = 55,916.77
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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.