Finding the Fourth Proportional to 85,775.08, 128,615.10 and 29,584.84
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Solution
The fourth proportional to 85,775.08, 128,615.10 and 29,584.84 is: 44,360.87
Step by Step Solution
- Step 1: Write the proportion equation
85,775.08 : 128,615.10 = 29,584.84 : x - Step 2: Convert to fraction form
85,775.08/128,615.10 = 29,584.84/x - Step 3: Cross multiply
85,775.08x = 128,615.10 × 29,584.84 - Step 4: Simplify right side
85,775.08x = 3,805,057,155.08 - Step 5: Solve for x
x = 3,805,057,155.08/85,775.08 - Step 6: Final answer
x = 44,360.87
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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.