Finding the Fourth Proportional to 209,765.12, 314,641.92 and 51,990.08
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Solution
The fourth proportional to 209,765.12, 314,641.92 and 51,990.08 is: 77,983.69
Step by Step Solution
- Step 1: Write the proportion equation
209,765.12 : 314,641.92 = 51,990.08 : x - Step 2: Convert to fraction form
209,765.12/314,641.92 = 51,990.08/x - Step 3: Cross multiply
209,765.12x = 314,641.92 × 51,990.08 - Step 4: Simplify right side
209,765.12x = 16,358,258,592.15 - Step 5: Solve for x
x = 16,358,258,592.15/209,765.12 - Step 6: Final answer
x = 77,983.69
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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.