Finding the Fourth Proportional to 86,720.80, 130,110.36 and 34,135.60
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Solution
The fourth proportional to 86,720.80, 130,110.36 and 34,135.60 is: 51,214.88
Step by Step Solution
- Step 1: Write the proportion equation
86,720.80 : 130,110.36 = 34,135.60 : x - Step 2: Convert to fraction form
86,720.80/130,110.36 = 34,135.60/x - Step 3: Cross multiply
86,720.80x = 130,110.36 × 34,135.60 - Step 4: Simplify right side
86,720.80x = 4,441,395,204.82 - Step 5: Solve for x
x = 4,441,395,204.82/86,720.80 - Step 6: Final answer
x = 51,214.88
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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.