Finding the Fourth Proportional to 74,119.25, 102,283.85 and 40,126.87
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Solution
The fourth proportional to 74,119.25, 102,283.85 and 40,126.87 is: 55,374.69
Step by Step Solution
- Step 1: Write the proportion equation
74,119.25 : 102,283.85 = 40,126.87 : x - Step 2: Convert to fraction form
74,119.25/102,283.85 = 40,126.87/x - Step 3: Cross multiply
74,119.25x = 102,283.85 × 40,126.87 - Step 4: Simplify right side
74,119.25x = 4,104,330,980.22 - Step 5: Solve for x
x = 4,104,330,980.22/74,119.25 - Step 6: Final answer
x = 55,374.69
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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.