Finding the Fourth Proportional to 76,688.80, 114,964.80 and 29,930.80
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Solution
The fourth proportional to 76,688.80, 114,964.80 and 29,930.80 is: 44,869.50
Step by Step Solution
- Step 1: Write the proportion equation
76,688.80 : 114,964.80 = 29,930.80 : x - Step 2: Convert to fraction form
76,688.80/114,964.80 = 29,930.80/x - Step 3: Cross multiply
76,688.80x = 114,964.80 × 29,930.80 - Step 4: Simplify right side
76,688.80x = 3,440,988,435.84 - Step 5: Solve for x
x = 3,440,988,435.84/76,688.80 - Step 6: Final answer
x = 44,869.50
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1.5x scale
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.