Finding the Fourth Proportional to 99,585.80, 149,378.70 and 25,713.80
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Solution
The fourth proportional to 99,585.80, 149,378.70 and 25,713.80 is: 38,570.70
Step by Step Solution
- Step 1: Write the proportion equation
99,585.80 : 149,378.70 = 25,713.80 : x - Step 2: Convert to fraction form
99,585.80/149,378.70 = 25,713.80/x - Step 3: Cross multiply
99,585.80x = 149,378.70 × 25,713.80 - Step 4: Simplify right side
99,585.80x = 3,841,094,016.06 - Step 5: Solve for x
x = 3,841,094,016.06/99,585.80 - Step 6: Final answer
x = 38,570.70
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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.