Finding the Fourth Proportional to 85,778.08, 128,619.60 and 29,587.84
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Solution
The fourth proportional to 85,778.08, 128,619.60 and 29,587.84 is: 44,365.37
Step by Step Solution
- Step 1: Write the proportion equation
85,778.08 : 128,619.60 = 29,587.84 : x - Step 2: Convert to fraction form
85,778.08/128,619.60 = 29,587.84/x - Step 3: Cross multiply
85,778.08x = 128,619.60 × 29,587.84 - Step 4: Simplify right side
85,778.08x = 3,805,576,145.66 - Step 5: Solve for x
x = 3,805,576,145.66/85,778.08 - Step 6: Final answer
x = 44,365.37
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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.