Finding the Fourth Proportional to 85,385.24, 128,077.86 and 29,226.08
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Solution
The fourth proportional to 85,385.24, 128,077.86 and 29,226.08 is: 43,839.12
Step by Step Solution
- Step 1: Write the proportion equation
85,385.24 : 128,077.86 = 29,226.08 : x - Step 2: Convert to fraction form
85,385.24/128,077.86 = 29,226.08/x - Step 3: Cross multiply
85,385.24x = 128,077.86 × 29,226.08 - Step 4: Simplify right side
85,385.24x = 3,743,213,782.59 - Step 5: Solve for x
x = 3,743,213,782.59/85,385.24 - Step 6: Final answer
x = 43,839.12
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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.