Finding the Fourth Proportional to 71,041.14, 106,561.68 and 21,121.02
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Solution
The fourth proportional to 71,041.14, 106,561.68 and 21,121.02 is: 31,681.52
Step by Step Solution
- Step 1: Write the proportion equation
71,041.14 : 106,561.68 = 21,121.02 : x - Step 2: Convert to fraction form
71,041.14/106,561.68 = 21,121.02/x - Step 3: Cross multiply
71,041.14x = 106,561.68 × 21,121.02 - Step 4: Simplify right side
71,041.14x = 2,250,691,374.51 - Step 5: Solve for x
x = 2,250,691,374.51/71,041.14 - Step 6: Final answer
x = 31,681.52
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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.