Finding the Fourth Proportional to 87,913.71, 121,339.71 and 57,324.99
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Solution
The fourth proportional to 87,913.71, 121,339.71 and 57,324.99 is: 79,120.74
Step by Step Solution
- Step 1: Write the proportion equation
87,913.71 : 121,339.71 = 57,324.99 : x - Step 2: Convert to fraction form
87,913.71/121,339.71 = 57,324.99/x - Step 3: Cross multiply
87,913.71x = 121,339.71 × 57,324.99 - Step 4: Simplify right side
87,913.71x = 6,955,797,662.35 - Step 5: Solve for x
x = 6,955,797,662.35/87,913.71 - Step 6: Final answer
x = 79,120.74
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1.5x scale
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.