Finding the Fourth Proportional to 71,215.96, 106,888.14 and 37,963.72
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Solution
The fourth proportional to 71,215.96, 106,888.14 and 37,963.72 is: 56,979.80
Step by Step Solution
- Step 1: Write the proportion equation
71,215.96 : 106,888.14 = 37,963.72 : x - Step 2: Convert to fraction form
71,215.96/106,888.14 = 37,963.72/x - Step 3: Cross multiply
71,215.96x = 106,888.14 × 37,963.72 - Step 4: Simplify right side
71,215.96x = 4,057,871,418.28 - Step 5: Solve for x
x = 4,057,871,418.28/71,215.96 - Step 6: Final answer
x = 56,979.80
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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.