Finding the Fourth Proportional to 81,325.80, 121,928.44 and 38,610.09
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Solution
The fourth proportional to 81,325.80, 121,928.44 and 38,610.09 is: 57,886.53
Step by Step Solution
- Step 1: Write the proportion equation
81,325.80 : 121,928.44 = 38,610.09 : x - Step 2: Convert to fraction form
81,325.80/121,928.44 = 38,610.09/x - Step 3: Cross multiply
81,325.80x = 121,928.44 × 38,610.09 - Step 4: Simplify right side
81,325.80x = 4,707,668,041.96 - Step 5: Solve for x
x = 4,707,668,041.96/81,325.80 - Step 6: Final answer
x = 57,886.53
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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.