Finding the Fourth Proportional to 71,679.36, 107,337.60 and 38,277.12
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Solution
The fourth proportional to 71,679.36, 107,337.60 and 38,277.12 is: 57,318.79
Step by Step Solution
- Step 1: Write the proportion equation
71,679.36 : 107,337.60 = 38,277.12 : x - Step 2: Convert to fraction form
71,679.36/107,337.60 = 38,277.12/x - Step 3: Cross multiply
71,679.36x = 107,337.60 × 38,277.12 - Step 4: Simplify right side
71,679.36x = 4,108,574,195.71 - Step 5: Solve for x
x = 4,108,574,195.71/71,679.36 - Step 6: Final answer
x = 57,318.79
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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.