Finding the Fourth Proportional to 77,355.21, 115,912.05 and 53,708.88
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Solution
The fourth proportional to 77,355.21, 115,912.05 and 53,708.88 is: 80,479.47
Step by Step Solution
- Step 1: Write the proportion equation
77,355.21 : 115,912.05 = 53,708.88 : x - Step 2: Convert to fraction form
77,355.21/115,912.05 = 53,708.88/x - Step 3: Cross multiply
77,355.21x = 115,912.05 × 53,708.88 - Step 4: Simplify right side
77,355.21x = 6,225,506,384.00 - Step 5: Solve for x
x = 6,225,506,384.00/77,355.21 - Step 6: Final answer
x = 80,479.47
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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.