Finding the Fourth Proportional to 102,354.24, 141,259.26 and 57,039.60
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Solution
The fourth proportional to 102,354.24, 141,259.26 and 57,039.60 is: 78,720.45
Step by Step Solution
- Step 1: Write the proportion equation
102,354.24 : 141,259.26 = 57,039.60 : x - Step 2: Convert to fraction form
102,354.24/141,259.26 = 57,039.60/x - Step 3: Cross multiply
102,354.24x = 141,259.26 × 57,039.60 - Step 4: Simplify right side
102,354.24x = 8,057,371,686.70 - Step 5: Solve for x
x = 8,057,371,686.70/102,354.24 - Step 6: Final answer
x = 78,720.45
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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.