Finding the Fourth Proportional to 69,823.80, 104,954.40 and 68,511.60
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Solution
The fourth proportional to 69,823.80, 104,954.40 and 68,511.60 is: 102,981.99
Step by Step Solution
- Step 1: Write the proportion equation
69,823.80 : 104,954.40 = 68,511.60 : x - Step 2: Convert to fraction form
69,823.80/104,954.40 = 68,511.60/x - Step 3: Cross multiply
69,823.80x = 104,954.40 × 68,511.60 - Step 4: Simplify right side
69,823.80x = 7,190,593,871.04 - Step 5: Solve for x
x = 7,190,593,871.04/69,823.80 - Step 6: Final answer
x = 102,981.99
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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.