Finding the Fourth Proportional to 100,590.24, 138,825.56 and 57,573.68
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Solution
The fourth proportional to 100,590.24, 138,825.56 and 57,573.68 is: 79,457.99
Step by Step Solution
- Step 1: Write the proportion equation
100,590.24 : 138,825.56 = 57,573.68 : x - Step 2: Convert to fraction form
100,590.24/138,825.56 = 57,573.68/x - Step 3: Cross multiply
100,590.24x = 138,825.56 × 57,573.68 - Step 4: Simplify right side
100,590.24x = 7,992,698,367.26 - Step 5: Solve for x
x = 7,992,698,367.26/100,590.24 - Step 6: Final answer
x = 79,457.99
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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.