Finding the Fourth Proportional to 106,962.36, 147,613.49 and 61,647.72
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Solution
The fourth proportional to 106,962.36, 147,613.49 and 61,647.72 is: 85,076.99
Step by Step Solution
- Step 1: Write the proportion equation
106,962.36 : 147,613.49 = 61,647.72 : x - Step 2: Convert to fraction form
106,962.36/147,613.49 = 61,647.72/x - Step 3: Cross multiply
106,962.36x = 147,613.49 × 61,647.72 - Step 4: Simplify right side
106,962.36x = 9,100,035,099.74 - Step 5: Solve for x
x = 9,100,035,099.74/106,962.36 - Step 6: Final answer
x = 85,076.99
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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.