Finding the Fourth Proportional to 87,613.08, 120,867.90 and 53,623.08
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Solution
The fourth proportional to 87,613.08, 120,867.90 and 53,623.08 is: 73,976.50
Step by Step Solution
- Step 1: Write the proportion equation
87,613.08 : 120,867.90 = 53,623.08 : x - Step 2: Convert to fraction form
87,613.08/120,867.90 = 53,623.08/x - Step 3: Cross multiply
87,613.08x = 120,867.90 × 53,623.08 - Step 4: Simplify right side
87,613.08x = 6,481,309,071.13 - Step 5: Solve for x
x = 6,481,309,071.13/87,613.08 - Step 6: Final answer
x = 73,976.50
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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.