Finding the Fourth Proportional to 74,124.54, 102,290.61 and 40,132.75
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Solution
The fourth proportional to 74,124.54, 102,290.61 and 40,132.75 is: 55,382.52
Step by Step Solution
- Step 1: Write the proportion equation
74,124.54 : 102,290.61 = 40,132.75 : x - Step 2: Convert to fraction form
74,124.54/102,290.61 = 40,132.75/x - Step 3: Cross multiply
74,124.54x = 102,290.61 × 40,132.75 - Step 4: Simplify right side
74,124.54x = 4,105,203,478.48 - Step 5: Solve for x
x = 4,105,203,478.48/74,124.54 - Step 6: Final answer
x = 55,382.52
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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.