Finding the Fourth Proportional to 71,583.80, 107,365.89 and 39,621.99
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Solution
The fourth proportional to 71,583.80, 107,365.89 and 39,621.99 is: 59,427.56
Step by Step Solution
- Step 1: Write the proportion equation
71,583.80 : 107,365.89 = 39,621.99 : x - Step 2: Convert to fraction form
71,583.80/107,365.89 = 39,621.99/x - Step 3: Cross multiply
71,583.80x = 107,365.89 × 39,621.99 - Step 4: Simplify right side
71,583.80x = 4,254,050,368.50 - Step 5: Solve for x
x = 4,254,050,368.50/71,583.80 - Step 6: Final answer
x = 59,427.56
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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.