Finding the Fourth Proportional to 89,811.99, 134,629.97 and 76,515.03
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Solution
The fourth proportional to 89,811.99, 134,629.97 and 76,515.03 is: 114,697.56
Step by Step Solution
- Step 1: Write the proportion equation
89,811.99 : 134,629.97 = 76,515.03 : x - Step 2: Convert to fraction form
89,811.99/134,629.97 = 76,515.03/x - Step 3: Cross multiply
89,811.99x = 134,629.97 × 76,515.03 - Step 4: Simplify right side
89,811.99x = 10,301,215,810.87 - Step 5: Solve for x
x = 10,301,215,810.87/89,811.99 - Step 6: Final answer
x = 114,697.56
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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.