Finding the Fourth Proportional to 81,628.08, 122,440.15 and 48,106.70
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Solution
The fourth proportional to 81,628.08, 122,440.15 and 48,106.70 is: 72,158.89
Step by Step Solution
- Step 1: Write the proportion equation
81,628.08 : 122,440.15 = 48,106.70 : x - Step 2: Convert to fraction form
81,628.08/122,440.15 = 48,106.70/x - Step 3: Cross multiply
81,628.08x = 122,440.15 × 48,106.70 - Step 4: Simplify right side
81,628.08x = 5,890,191,564.01 - Step 5: Solve for x
x = 5,890,191,564.01/81,628.08 - Step 6: Final answer
x = 72,158.89
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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.