Finding the Fourth Proportional to 68,404.60, 102,642.42 and 51,759.68
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Solution
The fourth proportional to 68,404.60, 102,642.42 and 51,759.68 is: 77,666.40
Step by Step Solution
- Step 1: Write the proportion equation
68,404.60 : 102,642.42 = 51,759.68 : x - Step 2: Convert to fraction form
68,404.60/102,642.42 = 51,759.68/x - Step 3: Cross multiply
68,404.60x = 102,642.42 × 51,759.68 - Step 4: Simplify right side
68,404.60x = 5,312,738,813.63 - Step 5: Solve for x
x = 5,312,738,813.63/68,404.60 - Step 6: Final answer
x = 77,666.40
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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.