Finding the Fourth Proportional to 87,913.20, 121,320.12 and 47,627.08
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Solution
The fourth proportional to 87,913.20, 121,320.12 and 47,627.08 is: 65,725.32
Step by Step Solution
- Step 1: Write the proportion equation
87,913.20 : 121,320.12 = 47,627.08 : x - Step 2: Convert to fraction form
87,913.20/121,320.12 = 47,627.08/x - Step 3: Cross multiply
87,913.20x = 121,320.12 × 47,627.08 - Step 4: Simplify right side
87,913.20x = 5,778,123,060.85 - Step 5: Solve for x
x = 5,778,123,060.85/87,913.20 - Step 6: Final answer
x = 65,725.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.