Finding the Fourth Proportional to 75,680.31, 104,448.86 and 48,900.70
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Solution
The fourth proportional to 75,680.31, 104,448.86 and 48,900.70 is: 67,489.45
Step by Step Solution
- Step 1: Write the proportion equation
75,680.31 : 104,448.86 = 48,900.70 : x - Step 2: Convert to fraction form
75,680.31/104,448.86 = 48,900.70/x - Step 3: Cross multiply
75,680.31x = 104,448.86 × 48,900.70 - Step 4: Simplify right side
75,680.31x = 5,107,622,368.20 - Step 5: Solve for x
x = 5,107,622,368.20/75,680.31 - Step 6: Final answer
x = 67,489.45
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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.