Finding the Fourth Proportional to 75,638.70, 113,310.63 and 43,970.94
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Solution
The fourth proportional to 75,638.70, 113,310.63 and 43,970.94 is: 65,870.71
Step by Step Solution
- Step 1: Write the proportion equation
75,638.70 : 113,310.63 = 43,970.94 : x - Step 2: Convert to fraction form
75,638.70/113,310.63 = 43,970.94/x - Step 3: Cross multiply
75,638.70x = 113,310.63 × 43,970.94 - Step 4: Simplify right side
75,638.70x = 4,982,374,913.09 - Step 5: Solve for x
x = 4,982,374,913.09/75,638.70 - Step 6: Final answer
x = 65,870.71
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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.