Finding the Fourth Proportional to 87,967.01, 121,394.60 and 47,680.75
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Solution
The fourth proportional to 87,967.01, 121,394.60 and 47,680.75 is: 65,799.50
Step by Step Solution
- Step 1: Write the proportion equation
87,967.01 : 121,394.60 = 47,680.75 : x - Step 2: Convert to fraction form
87,967.01/121,394.60 = 47,680.75/x - Step 3: Cross multiply
87,967.01x = 121,394.60 × 47,680.75 - Step 4: Simplify right side
87,967.01x = 5,788,185,666.09 - Step 5: Solve for x
x = 5,788,185,666.09/87,967.01 - Step 6: Final answer
x = 65,799.50
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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.