Finding the Fourth Proportional to 91,315.20, 136,854.12 and 37,216.70
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Solution
The fourth proportional to 91,315.20, 136,854.12 and 37,216.70 is: 55,776.68
Step by Step Solution
- Step 1: Write the proportion equation
91,315.20 : 136,854.12 = 37,216.70 : x - Step 2: Convert to fraction form
91,315.20/136,854.12 = 37,216.70/x - Step 3: Cross multiply
91,315.20x = 136,854.12 × 37,216.70 - Step 4: Simplify right side
91,315.20x = 5,093,258,727.80 - Step 5: Solve for x
x = 5,093,258,727.80/91,315.20 - Step 6: Final answer
x = 55,776.68
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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.