Finding the Fourth Proportional to 71,299.18, 107,142.63 and 38,042.74
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Solution
The fourth proportional to 71,299.18, 107,142.63 and 38,042.74 is: 57,167.55
Step by Step Solution
- Step 1: Write the proportion equation
71,299.18 : 107,142.63 = 38,042.74 : x - Step 2: Convert to fraction form
71,299.18/107,142.63 = 38,042.74/x - Step 3: Cross multiply
71,299.18x = 107,142.63 × 38,042.74 - Step 4: Simplify right side
71,299.18x = 4,075,999,216.01 - Step 5: Solve for x
x = 4,075,999,216.01/71,299.18 - Step 6: Final answer
x = 57,167.55
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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.