Finding the Fourth Proportional to 74,373.12, 102,634.92 and 40,839.12
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Solution
The fourth proportional to 74,373.12, 102,634.92 and 40,839.12 is: 56,357.99
Step by Step Solution
- Step 1: Write the proportion equation
74,373.12 : 102,634.92 = 40,839.12 : x - Step 2: Convert to fraction form
74,373.12/102,634.92 = 40,839.12/x - Step 3: Cross multiply
74,373.12x = 102,634.92 × 40,839.12 - Step 4: Simplify right side
74,373.12x = 4,191,519,814.07 - Step 5: Solve for x
x = 4,191,519,814.07/74,373.12 - Step 6: Final answer
x = 56,357.99
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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.