Finding the Fourth Proportional to 87,860.77, 121,216.49 and 53,856.97
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Solution
The fourth proportional to 87,860.77, 121,216.49 and 53,856.97 is: 74,303.39
Step by Step Solution
- Step 1: Write the proportion equation
87,860.77 : 121,216.49 = 53,856.97 : x - Step 2: Convert to fraction form
87,860.77/121,216.49 = 53,856.97/x - Step 3: Cross multiply
87,860.77x = 121,216.49 × 53,856.97 - Step 4: Simplify right side
87,860.77x = 6,528,352,865.44 - Step 5: Solve for x
x = 6,528,352,865.44/87,860.77 - Step 6: Final answer
x = 74,303.39
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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.