Finding the Fourth Proportional to 87,478.98, 120,658.80 and 58,392.68
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Solution
The fourth proportional to 87,478.98, 120,658.80 and 58,392.68 is: 80,540.38
Step by Step Solution
- Step 1: Write the proportion equation
87,478.98 : 120,658.80 = 58,392.68 : x - Step 2: Convert to fraction form
87,478.98/120,658.80 = 58,392.68/x - Step 3: Cross multiply
87,478.98x = 120,658.80 × 58,392.68 - Step 4: Simplify right side
87,478.98x = 7,045,590,094.29 - Step 5: Solve for x
x = 7,045,590,094.29/87,478.98 - Step 6: Final answer
x = 80,540.38
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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.