Finding the Fourth Proportional to 74,439.76, 102,727.68 and 40,905.76
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Solution
The fourth proportional to 74,439.76, 102,727.68 and 40,905.76 is: 56,450.39
Step by Step Solution
- Step 1: Write the proportion equation
74,439.76 : 102,727.68 = 40,905.76 : x - Step 2: Convert to fraction form
74,439.76/102,727.68 = 40,905.76/x - Step 3: Cross multiply
74,439.76x = 102,727.68 × 40,905.76 - Step 4: Simplify right side
74,439.76x = 4,202,153,823.44 - Step 5: Solve for x
x = 4,202,153,823.44/74,439.76 - Step 6: Final answer
x = 56,450.39
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1.5x scale
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.