Finding the Fourth Proportional to 91,707.96, 126,556.50 and 51,421.68
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Solution
The fourth proportional to 91,707.96, 126,556.50 and 51,421.68 is: 70,961.65
Step by Step Solution
- Step 1: Write the proportion equation
91,707.96 : 126,556.50 = 51,421.68 : x - Step 2: Convert to fraction form
91,707.96/126,556.50 = 51,421.68/x - Step 3: Cross multiply
91,707.96x = 126,556.50 × 51,421.68 - Step 4: Simplify right side
91,707.96x = 6,507,747,844.92 - Step 5: Solve for x
x = 6,507,747,844.92/91,707.96 - Step 6: Final answer
x = 70,961.65
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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.