Finding the Fourth Proportional to 83,719.58, 115,531.01 and 47,907.30
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Solution
The fourth proportional to 83,719.58, 115,531.01 and 47,907.30 is: 66,110.92
Step by Step Solution
- Step 1: Write the proportion equation
83,719.58 : 115,531.01 = 47,907.30 : x - Step 2: Convert to fraction form
83,719.58/115,531.01 = 47,907.30/x - Step 3: Cross multiply
83,719.58x = 115,531.01 × 47,907.30 - Step 4: Simplify right side
83,719.58x = 5,534,778,478.87 - Step 5: Solve for x
x = 5,534,778,478.87/83,719.58 - Step 6: Final answer
x = 66,110.92
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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.