Finding the Fourth Proportional to 74,438.75, 102,727.10 and 40,904.75
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Solution
The fourth proportional to 74,438.75, 102,727.10 and 40,904.75 is: 56,449.45
Step by Step Solution
- Step 1: Write the proportion equation
74,438.75 : 102,727.10 = 40,904.75 : x - Step 2: Convert to fraction form
74,438.75/102,727.10 = 40,904.75/x - Step 3: Cross multiply
74,438.75x = 102,727.10 × 40,904.75 - Step 4: Simplify right side
74,438.75x = 4,202,026,343.73 - Step 5: Solve for x
x = 4,202,026,343.73/74,438.75 - Step 6: Final answer
x = 56,449.45
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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.