Finding the Fourth Proportional to 74,008.08, 102,129.12 and 40,474.08
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Solution
The fourth proportional to 74,008.08, 102,129.12 and 40,474.08 is: 55,853.12
Step by Step Solution
- Step 1: Write the proportion equation
74,008.08 : 102,129.12 = 40,474.08 : x - Step 2: Convert to fraction form
74,008.08/102,129.12 = 40,474.08/x - Step 3: Cross multiply
74,008.08x = 102,129.12 × 40,474.08 - Step 4: Simplify right side
74,008.08x = 4,133,582,173.21 - Step 5: Solve for x
x = 4,133,582,173.21/74,008.08 - Step 6: Final answer
x = 55,853.12
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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.