Finding the Fourth Proportional to 85,530.25, 128,263.47 and 29,354.42
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Solution
The fourth proportional to 85,530.25, 128,263.47 and 29,354.42 is: 44,020.68
Step by Step Solution
- Step 1: Write the proportion equation
85,530.25 : 128,263.47 = 29,354.42 : x - Step 2: Convert to fraction form
85,530.25/128,263.47 = 29,354.42/x - Step 3: Cross multiply
85,530.25x = 128,263.47 × 29,354.42 - Step 4: Simplify right side
85,530.25x = 3,765,099,258.13 - Step 5: Solve for x
x = 3,765,099,258.13/85,530.25 - Step 6: Final answer
x = 44,020.68
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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.