Finding the Fourth Proportional to 87,948.15, 131,920.80 and 27,975.75
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Solution
The fourth proportional to 87,948.15, 131,920.80 and 27,975.75 is: 41,963.17
Step by Step Solution
- Step 1: Write the proportion equation
87,948.15 : 131,920.80 = 27,975.75 : x - Step 2: Convert to fraction form
87,948.15/131,920.80 = 27,975.75/x - Step 3: Cross multiply
87,948.15x = 131,920.80 × 27,975.75 - Step 4: Simplify right side
87,948.15x = 3,690,583,320.60 - Step 5: Solve for x
x = 3,690,583,320.60/87,948.15 - Step 6: Final answer
x = 41,963.17
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1.5x scale
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.