Finding the Fourth Proportional to 76,911.40, 115,367.10 and 73,565.80
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Solution
The fourth proportional to 76,911.40, 115,367.10 and 73,565.80 is: 110,348.70
Step by Step Solution
- Step 1: Write the proportion equation
76,911.40 : 115,367.10 = 73,565.80 : x - Step 2: Convert to fraction form
76,911.40/115,367.10 = 73,565.80/x - Step 3: Cross multiply
76,911.40x = 115,367.10 × 73,565.80 - Step 4: Simplify right side
76,911.40x = 8,487,073,005.18 - Step 5: Solve for x
x = 8,487,073,005.18/76,911.40 - Step 6: Final answer
x = 110,348.70
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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.