Finding the Fourth Proportional to 87,090.18, 120,071.66 and 56,408.68
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Solution
The fourth proportional to 87,090.18, 120,071.66 and 56,408.68 is: 77,770.92
Step by Step Solution
- Step 1: Write the proportion equation
87,090.18 : 120,071.66 = 56,408.68 : x - Step 2: Convert to fraction form
87,090.18/120,071.66 = 56,408.68/x - Step 3: Cross multiply
87,090.18x = 120,071.66 × 56,408.68 - Step 4: Simplify right side
87,090.18x = 6,773,083,846.01 - Step 5: Solve for x
x = 6,773,083,846.01/87,090.18 - Step 6: Final answer
x = 77,770.92
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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.