Finding the Fourth Proportional to 86,515.24, 119,335.90 and 76,280.08
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Solution
The fourth proportional to 86,515.24, 119,335.90 and 76,280.08 is: 105,217.90
Step by Step Solution
- Step 1: Write the proportion equation
86,515.24 : 119,335.90 = 76,280.08 : x - Step 2: Convert to fraction form
86,515.24/119,335.90 = 76,280.08/x - Step 3: Cross multiply
86,515.24x = 119,335.90 × 76,280.08 - Step 4: Simplify right side
86,515.24x = 9,102,951,998.87 - Step 5: Solve for x
x = 9,102,951,998.87/86,515.24 - Step 6: Final answer
x = 105,217.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.