Finding the Fourth Proportional to 71,931.80, 107,913.27 and 27,558.55
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Solution
The fourth proportional to 71,931.80, 107,913.27 and 27,558.55 is: 41,343.80
Step by Step Solution
- Step 1: Write the proportion equation
71,931.80 : 107,913.27 = 27,558.55 : x - Step 2: Convert to fraction form
71,931.80/107,913.27 = 27,558.55/x - Step 3: Cross multiply
71,931.80x = 107,913.27 × 27,558.55 - Step 4: Simplify right side
71,931.80x = 2,973,933,485.19 - Step 5: Solve for x
x = 2,973,933,485.19/71,931.80 - Step 6: Final answer
x = 41,343.80
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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.