Finding the Fourth Proportional to 77,818.24, 107,325.76 and 49,475.20
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Solution
The fourth proportional to 77,818.24, 107,325.76 and 49,475.20 is: 68,235.46
Step by Step Solution
- Step 1: Write the proportion equation
77,818.24 : 107,325.76 = 49,475.20 : x - Step 2: Convert to fraction form
77,818.24/107,325.76 = 49,475.20/x - Step 3: Cross multiply
77,818.24x = 107,325.76 × 49,475.20 - Step 4: Simplify right side
77,818.24x = 5,309,963,441.15 - Step 5: Solve for x
x = 5,309,963,441.15/77,818.24 - Step 6: Final answer
x = 68,235.46
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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.