Finding the Fourth Proportional to 87,292.80, 130,744.80 and 75,628.80
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Solution
The fourth proportional to 87,292.80, 130,744.80 and 75,628.80 is: 113,274.78
Step by Step Solution
- Step 1: Write the proportion equation
87,292.80 : 130,744.80 = 75,628.80 : x - Step 2: Convert to fraction form
87,292.80/130,744.80 = 75,628.80/x - Step 3: Cross multiply
87,292.80x = 130,744.80 × 75,628.80 - Step 4: Simplify right side
87,292.80x = 9,888,072,330.24 - Step 5: Solve for x
x = 9,888,072,330.24/87,292.80 - Step 6: Final answer
x = 113,274.78
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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.