Finding the Fourth Proportional to 100,036.30, 138,034.74 and 57,586.62
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Solution
The fourth proportional to 100,036.30, 138,034.74 and 57,586.62 is: 79,460.70
Step by Step Solution
- Step 1: Write the proportion equation
100,036.30 : 138,034.74 = 57,586.62 : x - Step 2: Convert to fraction form
100,036.30/138,034.74 = 57,586.62/x - Step 3: Cross multiply
100,036.30x = 138,034.74 × 57,586.62 - Step 4: Simplify right side
100,036.30x = 7,948,954,119.18 - Step 5: Solve for x
x = 7,948,954,119.18/100,036.30 - Step 6: Final answer
x = 79,460.70
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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.