Finding the Fourth Proportional to 71,187.84, 106,780.32 and 21,268.08
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Solution
The fourth proportional to 71,187.84, 106,780.32 and 21,268.08 is: 31,901.69
Step by Step Solution
- Step 1: Write the proportion equation
71,187.84 : 106,780.32 = 21,268.08 : x - Step 2: Convert to fraction form
71,187.84/106,780.32 = 21,268.08/x - Step 3: Cross multiply
71,187.84x = 106,780.32 × 21,268.08 - Step 4: Simplify right side
71,187.84x = 2,271,012,388.19 - Step 5: Solve for x
x = 2,271,012,388.19/71,187.84 - Step 6: Final answer
x = 31,901.69
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.