Finding the Fourth Proportional to 81,245.16, 121,647.90 and 53,095.08
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Solution
The fourth proportional to 81,245.16, 121,647.90 and 53,095.08 is: 79,498.95
Step by Step Solution
- Step 1: Write the proportion equation
81,245.16 : 121,647.90 = 53,095.08 : x - Step 2: Convert to fraction form
81,245.16/121,647.90 = 53,095.08/x - Step 3: Cross multiply
81,245.16x = 121,647.90 × 53,095.08 - Step 4: Simplify right side
81,245.16x = 6,458,904,982.33 - Step 5: Solve for x
x = 6,458,904,982.33/81,245.16 - Step 6: Final answer
x = 79,498.95
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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.