Finding the Fourth Proportional to 87,713.76, 131,590.08 and 40,941.12
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Solution
The fourth proportional to 87,713.76, 131,590.08 and 40,941.12 is: 61,420.75
Step by Step Solution
- Step 1: Write the proportion equation
87,713.76 : 131,590.08 = 40,941.12 : x - Step 2: Convert to fraction form
87,713.76/131,590.08 = 40,941.12/x - Step 3: Cross multiply
87,713.76x = 131,590.08 × 40,941.12 - Step 4: Simplify right side
87,713.76x = 5,387,445,256.09 - Step 5: Solve for x
x = 5,387,445,256.09/87,713.76 - Step 6: Final answer
x = 61,420.75
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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.