Finding the Fourth Proportional to 80,913.21, 121,258.98 and 51,351.79
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Solution
The fourth proportional to 80,913.21, 121,258.98 and 51,351.79 is: 76,957.34
Step by Step Solution
- Step 1: Write the proportion equation
80,913.21 : 121,258.98 = 51,351.79 : x - Step 2: Convert to fraction form
80,913.21/121,258.98 = 51,351.79/x - Step 3: Cross multiply
80,913.21x = 121,258.98 × 51,351.79 - Step 4: Simplify right side
80,913.21x = 6,226,865,676.57 - Step 5: Solve for x
x = 6,226,865,676.57/80,913.21 - Step 6: Final answer
x = 76,957.34
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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.