Finding the Fourth Proportional to 71,272.46, 106,900.47 and 18,686.12
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Solution
The fourth proportional to 71,272.46, 106,900.47 and 18,686.12 is: 28,027.02
Step by Step Solution
- Step 1: Write the proportion equation
71,272.46 : 106,900.47 = 18,686.12 : x - Step 2: Convert to fraction form
71,272.46/106,900.47 = 18,686.12/x - Step 3: Cross multiply
71,272.46x = 106,900.47 × 18,686.12 - Step 4: Simplify right side
71,272.46x = 1,997,555,010.48 - Step 5: Solve for x
x = 1,997,555,010.48/71,272.46 - Step 6: Final answer
x = 28,027.02
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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.