Finding the Fourth Proportional to 74,021.14, 110,991.72 and 38,394.14
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Solution
The fourth proportional to 74,021.14, 110,991.72 and 38,394.14 is: 57,570.46
Step by Step Solution
- Step 1: Write the proportion equation
74,021.14 : 110,991.72 = 38,394.14 : x - Step 2: Convert to fraction form
74,021.14/110,991.72 = 38,394.14/x - Step 3: Cross multiply
74,021.14x = 110,991.72 × 38,394.14 - Step 4: Simplify right side
74,021.14x = 4,261,430,889.59 - Step 5: Solve for x
x = 4,261,430,889.59/74,021.14 - Step 6: Final answer
x = 57,570.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.