Finding the Fourth Proportional to 75,830.40, 104,653.44 and 56,676.96
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Solution
The fourth proportional to 75,830.40, 104,653.44 and 56,676.96 is: 78,219.80
Step by Step Solution
- Step 1: Write the proportion equation
75,830.40 : 104,653.44 = 56,676.96 : x - Step 2: Convert to fraction form
75,830.40/104,653.44 = 56,676.96/x - Step 3: Cross multiply
75,830.40x = 104,653.44 × 56,676.96 - Step 4: Simplify right side
75,830.40x = 5,931,438,832.74 - Step 5: Solve for x
x = 5,931,438,832.74/75,830.40 - Step 6: Final answer
x = 78,219.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.