Finding the Fourth Proportional to 71,125.28, 106,694.08 and 18,534.80
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Solution
The fourth proportional to 71,125.28, 106,694.08 and 18,534.80 is: 27,803.81
Step by Step Solution
- Step 1: Write the proportion equation
71,125.28 : 106,694.08 = 18,534.80 : x - Step 2: Convert to fraction form
71,125.28/106,694.08 = 18,534.80/x - Step 3: Cross multiply
71,125.28x = 106,694.08 × 18,534.80 - Step 4: Simplify right side
71,125.28x = 1,977,553,433.98 - Step 5: Solve for x
x = 1,977,553,433.98/71,125.28 - Step 6: Final answer
x = 27,803.81
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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.