Finding the Fourth Proportional to 71,494.21, 107,242.08 and 21,574.75
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Solution
The fourth proportional to 71,494.21, 107,242.08 and 21,574.75 is: 32,362.35
Step by Step Solution
- Step 1: Write the proportion equation
71,494.21 : 107,242.08 = 21,574.75 : x - Step 2: Convert to fraction form
71,494.21/107,242.08 = 21,574.75/x - Step 3: Cross multiply
71,494.21x = 107,242.08 × 21,574.75 - Step 4: Simplify right side
71,494.21x = 2,313,720,421.40 - Step 5: Solve for x
x = 2,313,720,421.40/71,494.21 - Step 6: Final answer
x = 32,362.35
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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.