Finding the Fourth Proportional to 30,720.78, 46,080.86 and 14,076.09
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Solution
The fourth proportional to 30,720.78, 46,080.86 and 14,076.09 is: 21,113.99
Step by Step Solution
- Step 1: Write the proportion equation
30,720.78 : 46,080.86 = 14,076.09 : x - Step 2: Convert to fraction form
30,720.78/46,080.86 = 14,076.09/x - Step 3: Cross multiply
30,720.78x = 46,080.86 × 14,076.09 - Step 4: Simplify right side
30,720.78x = 648,638,262.26 - Step 5: Solve for x
x = 648,638,262.26/30,720.78 - Step 6: Final answer
x = 21,113.99
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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.