Finding the Fourth Proportional to 79,871.19, 119,880.56 and 40,455.98
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Solution
The fourth proportional to 79,871.19, 119,880.56 and 40,455.98 is: 60,721.34
Step by Step Solution
- Step 1: Write the proportion equation
79,871.19 : 119,880.56 = 40,455.98 : x - Step 2: Convert to fraction form
79,871.19/119,880.56 = 40,455.98/x - Step 3: Cross multiply
79,871.19x = 119,880.56 × 40,455.98 - Step 4: Simplify right side
79,871.19x = 4,849,885,537.75 - Step 5: Solve for x
x = 4,849,885,537.75/79,871.19 - Step 6: Final answer
x = 60,721.34
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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.