Finding the Fourth Proportional to 77,931.28, 116,711.36 and 49,764.09
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Solution
The fourth proportional to 77,931.28, 116,711.36 and 49,764.09 is: 74,527.64
Step by Step Solution
- Step 1: Write the proportion equation
77,931.28 : 116,711.36 = 49,764.09 : x - Step 2: Convert to fraction form
77,931.28/116,711.36 = 49,764.09/x - Step 3: Cross multiply
77,931.28x = 116,711.36 × 49,764.09 - Step 4: Simplify right side
77,931.28x = 5,808,034,163.92 - Step 5: Solve for x
x = 5,808,034,163.92/77,931.28 - Step 6: Final answer
x = 74,527.64
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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.