Finding the Fourth Proportional to 68,340.80, 102,511.20 and 62,811.20
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Solution
The fourth proportional to 68,340.80, 102,511.20 and 62,811.20 is: 94,216.80
Step by Step Solution
- Step 1: Write the proportion equation
68,340.80 : 102,511.20 = 62,811.20 : x - Step 2: Convert to fraction form
68,340.80/102,511.20 = 62,811.20/x - Step 3: Cross multiply
68,340.80x = 102,511.20 × 62,811.20 - Step 4: Simplify right side
68,340.80x = 6,438,851,485.44 - Step 5: Solve for x
x = 6,438,851,485.44/68,340.80 - Step 6: Final answer
x = 94,216.80
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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.