Finding the Fourth Proportional to 71,129.88, 106,672.04 and 39,555.07
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Solution
The fourth proportional to 71,129.88, 106,672.04 and 39,555.07 is: 59,319.94
Step by Step Solution
- Step 1: Write the proportion equation
71,129.88 : 106,672.04 = 39,555.07 : x - Step 2: Convert to fraction form
71,129.88/106,672.04 = 39,555.07/x - Step 3: Cross multiply
71,129.88x = 106,672.04 × 39,555.07 - Step 4: Simplify right side
71,129.88x = 4,219,420,108.13 - Step 5: Solve for x
x = 4,219,420,108.13/71,129.88 - Step 6: Final answer
x = 59,319.94
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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.