Finding the Fourth Proportional to 71,901.04, 107,865.68 and 21,988.23
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Solution
The fourth proportional to 71,901.04, 107,865.68 and 21,988.23 is: 32,986.66
Step by Step Solution
- Step 1: Write the proportion equation
71,901.04 : 107,865.68 = 21,988.23 : x - Step 2: Convert to fraction form
71,901.04/107,865.68 = 21,988.23/x - Step 3: Cross multiply
71,901.04x = 107,865.68 × 21,988.23 - Step 4: Simplify right side
71,901.04x = 2,371,775,380.95 - Step 5: Solve for x
x = 2,371,775,380.95/71,901.04 - Step 6: Final answer
x = 32,986.66
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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.