Finding the Fourth Proportional to 87,368.80, 130,858.80 and 75,704.80
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Solution
The fourth proportional to 87,368.80, 130,858.80 and 75,704.80 is: 113,388.75
Step by Step Solution
- Step 1: Write the proportion equation
87,368.80 : 130,858.80 = 75,704.80 : x - Step 2: Convert to fraction form
87,368.80/130,858.80 = 75,704.80/x - Step 3: Cross multiply
87,368.80x = 130,858.80 × 75,704.80 - Step 4: Simplify right side
87,368.80x = 9,906,639,282.24 - Step 5: Solve for x
x = 9,906,639,282.24/87,368.80 - Step 6: Final answer
x = 113,388.75
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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.