Finding the Fourth Proportional to 115,989.75, 173,984.63 and 28,437.75
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Solution
The fourth proportional to 115,989.75, 173,984.63 and 28,437.75 is: 42,656.63
Step by Step Solution
- Step 1: Write the proportion equation
115,989.75 : 173,984.63 = 28,437.75 : x - Step 2: Convert to fraction form
115,989.75/173,984.63 = 28,437.75/x - Step 3: Cross multiply
115,989.75x = 173,984.63 × 28,437.75 - Step 4: Simplify right side
115,989.75x = 4,947,731,411.78 - Step 5: Solve for x
x = 4,947,731,411.78/115,989.75 - Step 6: Final answer
x = 42,656.63
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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.