Finding the Fourth Proportional to 86,149.20, 129,222.99 and 29,989.20
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Solution
The fourth proportional to 86,149.20, 129,222.99 and 29,989.20 is: 44,983.52
Step by Step Solution
- Step 1: Write the proportion equation
86,149.20 : 129,222.99 = 29,989.20 : x - Step 2: Convert to fraction form
86,149.20/129,222.99 = 29,989.20/x - Step 3: Cross multiply
86,149.20x = 129,222.99 × 29,989.20 - Step 4: Simplify right side
86,149.20x = 3,875,294,091.71 - Step 5: Solve for x
x = 3,875,294,091.71/86,149.20 - Step 6: Final answer
x = 44,983.52
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1.5x scale
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.