Finding the Fourth Proportional to 78,765.36, 108,676.62 and 48,130.53
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Solution
The fourth proportional to 78,765.36, 108,676.62 and 48,130.53 is: 66,408.17
Step by Step Solution
- Step 1: Write the proportion equation
78,765.36 : 108,676.62 = 48,130.53 : x - Step 2: Convert to fraction form
78,765.36/108,676.62 = 48,130.53/x - Step 3: Cross multiply
78,765.36x = 108,676.62 × 48,130.53 - Step 4: Simplify right side
78,765.36x = 5,230,663,319.21 - Step 5: Solve for x
x = 5,230,663,319.21/78,765.36 - Step 6: Final answer
x = 66,408.17
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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.