Finding the Fourth Proportional to 84,006.20, 125,717.70 and 57,762.20
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Solution
The fourth proportional to 84,006.20, 125,717.70 and 57,762.20 is: 86,442.80
Step by Step Solution
- Step 1: Write the proportion equation
84,006.20 : 125,717.70 = 57,762.20 : x - Step 2: Convert to fraction form
84,006.20/125,717.70 = 57,762.20/x - Step 3: Cross multiply
84,006.20x = 125,717.70 × 57,762.20 - Step 4: Simplify right side
84,006.20x = 7,261,730,930.94 - Step 5: Solve for x
x = 7,261,730,930.94/84,006.20 - Step 6: Final answer
x = 86,442.80
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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.