Finding the Fourth Proportional to 79,839.74, 119,778.84 and 29,920.28
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Solution
The fourth proportional to 79,839.74, 119,778.84 and 29,920.28 is: 44,887.62
Step by Step Solution
- Step 1: Write the proportion equation
79,839.74 : 119,778.84 = 29,920.28 : x - Step 2: Convert to fraction form
79,839.74/119,778.84 = 29,920.28/x - Step 3: Cross multiply
79,839.74x = 119,778.84 × 29,920.28 - Step 4: Simplify right side
79,839.74x = 3,583,815,831.98 - Step 5: Solve for x
x = 3,583,815,831.98/79,839.74 - Step 6: Final answer
x = 44,887.62
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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.