Finding the Fourth Proportional to 76,986.36, 106,239.18 and 43,452.12
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Solution
The fourth proportional to 76,986.36, 106,239.18 and 43,452.12 is: 59,962.80
Step by Step Solution
- Step 1: Write the proportion equation
76,986.36 : 106,239.18 = 43,452.12 : x - Step 2: Convert to fraction form
76,986.36/106,239.18 = 43,452.12/x - Step 3: Cross multiply
76,986.36x = 106,239.18 × 43,452.12 - Step 4: Simplify right side
76,986.36x = 4,616,317,598.06 - Step 5: Solve for x
x = 4,616,317,598.06/76,986.36 - Step 6: Final answer
x = 59,962.80
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1.5x scale
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.