Finding the Fourth Proportional to 81,037.92, 121,556.16 and 28,435.08
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Solution
The fourth proportional to 81,037.92, 121,556.16 and 28,435.08 is: 42,652.37
Step by Step Solution
- Step 1: Write the proportion equation
81,037.92 : 121,556.16 = 28,435.08 : x - Step 2: Convert to fraction form
81,037.92/121,556.16 = 28,435.08/x - Step 3: Cross multiply
81,037.92x = 121,556.16 × 28,435.08 - Step 4: Simplify right side
81,037.92x = 3,456,459,134.09 - Step 5: Solve for x
x = 3,456,459,134.09/81,037.92 - Step 6: Final answer
x = 42,652.37
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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.