Finding the Fourth Proportional to 92,431.18, 138,656.49 and 30,106.54
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Solution
The fourth proportional to 92,431.18, 138,656.49 and 30,106.54 is: 45,162.98
Step by Step Solution
- Step 1: Write the proportion equation
92,431.18 : 138,656.49 = 30,106.54 : x - Step 2: Convert to fraction form
92,431.18/138,656.49 = 30,106.54/x - Step 3: Cross multiply
92,431.18x = 138,656.49 × 30,106.54 - Step 4: Simplify right side
92,431.18x = 4,174,467,162.44 - Step 5: Solve for x
x = 4,174,467,162.44/92,431.18 - Step 6: Final answer
x = 45,162.98
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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.