Finding the Fourth Proportional to 84,099.68, 126,149.16 and 31,533.92
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Solution
The fourth proportional to 84,099.68, 126,149.16 and 31,533.92 is: 47,300.75
Step by Step Solution
- Step 1: Write the proportion equation
84,099.68 : 126,149.16 = 31,533.92 : x - Step 2: Convert to fraction form
84,099.68/126,149.16 = 31,533.92/x - Step 3: Cross multiply
84,099.68x = 126,149.16 × 31,533.92 - Step 4: Simplify right side
84,099.68x = 3,977,977,519.51 - Step 5: Solve for x
x = 3,977,977,519.51/84,099.68 - Step 6: Final answer
x = 47,300.75
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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.