Finding the Fourth Proportional to 75,887.40, 113,863.92 and 29,129.40
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Solution
The fourth proportional to 75,887.40, 113,863.92 and 29,129.40 is: 43,706.70
Step by Step Solution
- Step 1: Write the proportion equation
75,887.40 : 113,863.92 = 29,129.40 : x - Step 2: Convert to fraction form
75,887.40/113,863.92 = 29,129.40/x - Step 3: Cross multiply
75,887.40x = 113,863.92 × 29,129.40 - Step 4: Simplify right side
75,887.40x = 3,316,787,671.25 - Step 5: Solve for x
x = 3,316,787,671.25/75,887.40 - Step 6: Final answer
x = 43,706.70
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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.