Finding the Fourth Proportional to 74,569.20, 102,905.96 and 40,577.96
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Solution
The fourth proportional to 74,569.20, 102,905.96 and 40,577.96 is: 55,997.84
Step by Step Solution
- Step 1: Write the proportion equation
74,569.20 : 102,905.96 = 40,577.96 : x - Step 2: Convert to fraction form
74,569.20/102,905.96 = 40,577.96/x - Step 3: Cross multiply
74,569.20x = 102,905.96 × 40,577.96 - Step 4: Simplify right side
74,569.20x = 4,175,713,928.64 - Step 5: Solve for x
x = 4,175,713,928.64/74,569.20 - Step 6: Final answer
x = 55,997.84
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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.