Finding the Fourth Proportional to 83,807.22, 115,620.99 and 47,977.92
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Solution
The fourth proportional to 83,807.22, 115,620.99 and 47,977.92 is: 66,190.65
Step by Step Solution
- Step 1: Write the proportion equation
83,807.22 : 115,620.99 = 47,977.92 : x - Step 2: Convert to fraction form
83,807.22/115,620.99 = 47,977.92/x - Step 3: Cross multiply
83,807.22x = 115,620.99 × 47,977.92 - Step 4: Simplify right side
83,807.22x = 5,547,254,608.54 - Step 5: Solve for x
x = 5,547,254,608.54/83,807.22 - Step 6: Final answer
x = 66,190.65
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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.