Finding the Fourth Proportional to 74,199.28, 102,376.64 and 43,991.68
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Solution
The fourth proportional to 74,199.28, 102,376.64 and 43,991.68 is: 60,697.63
Step by Step Solution
- Step 1: Write the proportion equation
74,199.28 : 102,376.64 = 43,991.68 : x - Step 2: Convert to fraction form
74,199.28/102,376.64 = 43,991.68/x - Step 3: Cross multiply
74,199.28x = 102,376.64 × 43,991.68 - Step 4: Simplify right side
74,199.28x = 4,503,720,386.36 - Step 5: Solve for x
x = 4,503,720,386.36/74,199.28 - Step 6: Final answer
x = 60,697.63
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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.