Finding the Fourth Proportional to 81,337.26, 121,982.41 and 28,027.06
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Solution
The fourth proportional to 81,337.26, 121,982.41 and 28,027.06 is: 42,032.50
Step by Step Solution
- Step 1: Write the proportion equation
81,337.26 : 121,982.41 = 28,027.06 : x - Step 2: Convert to fraction form
81,337.26/121,982.41 = 28,027.06/x - Step 3: Cross multiply
81,337.26x = 121,982.41 × 28,027.06 - Step 4: Simplify right side
81,337.26x = 3,418,808,324.01 - Step 5: Solve for x
x = 3,418,808,324.01/81,337.26 - Step 6: Final answer
x = 42,032.50
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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.