Finding the Fourth Proportional to 83,415.16, 115,137.06 and 47,624.68
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Solution
The fourth proportional to 83,415.16, 115,137.06 and 47,624.68 is: 65,735.84
Step by Step Solution
- Step 1: Write the proportion equation
83,415.16 : 115,137.06 = 47,624.68 : x - Step 2: Convert to fraction form
83,415.16/115,137.06 = 47,624.68/x - Step 3: Cross multiply
83,415.16x = 115,137.06 × 47,624.68 - Step 4: Simplify right side
83,415.16x = 5,483,365,638.64 - Step 5: Solve for x
x = 5,483,365,638.64/83,415.16 - Step 6: Final answer
x = 65,735.84
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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.