Finding the Fourth Proportional to 86,528.70, 129,720.15 and 44,975.70
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Solution
The fourth proportional to 86,528.70, 129,720.15 and 44,975.70 is: 67,425.66
Step by Step Solution
- Step 1: Write the proportion equation
86,528.70 : 129,720.15 = 44,975.70 : x - Step 2: Convert to fraction form
86,528.70/129,720.15 = 44,975.70/x - Step 3: Cross multiply
86,528.70x = 129,720.15 × 44,975.70 - Step 4: Simplify right side
86,528.70x = 5,834,254,550.36 - Step 5: Solve for x
x = 5,834,254,550.36/86,528.70 - Step 6: Final answer
x = 67,425.66
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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.