Finding the Fourth Proportional to 87,197.19, 120,336.08 and 51,388.71
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Solution
The fourth proportional to 87,197.19, 120,336.08 and 51,388.71 is: 70,918.75
Step by Step Solution
- Step 1: Write the proportion equation
87,197.19 : 120,336.08 = 51,388.71 : x - Step 2: Convert to fraction form
87,197.19/120,336.08 = 51,388.71/x - Step 3: Cross multiply
87,197.19x = 120,336.08 × 51,388.71 - Step 4: Simplify right side
87,197.19x = 6,183,915,660.71 - Step 5: Solve for x
x = 6,183,915,660.71/87,197.19 - Step 6: Final answer
x = 70,918.75
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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.