Finding the Fourth Proportional to 74,635.93, 102,997.68 and 40,644.48
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Solution
The fourth proportional to 74,635.93, 102,997.68 and 40,644.48 is: 56,089.44
Step by Step Solution
- Step 1: Write the proportion equation
74,635.93 : 102,997.68 = 40,644.48 : x - Step 2: Convert to fraction form
74,635.93/102,997.68 = 40,644.48/x - Step 3: Cross multiply
74,635.93x = 102,997.68 × 40,644.48 - Step 4: Simplify right side
74,635.93x = 4,186,287,378.63 - Step 5: Solve for x
x = 4,186,287,378.63/74,635.93 - Step 6: Final answer
x = 56,089.44
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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.