Finding the Fourth Proportional to 128,539.70, 192,751.95 and 49,627.70
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Solution
The fourth proportional to 128,539.70, 192,751.95 and 49,627.70 is: 74,419.31
Step by Step Solution
- Step 1: Write the proportion equation
128,539.70 : 192,751.95 = 49,627.70 : x - Step 2: Convert to fraction form
128,539.70/192,751.95 = 49,627.70/x - Step 3: Cross multiply
128,539.70x = 192,751.95 × 49,627.70 - Step 4: Simplify right side
128,539.70x = 9,565,835,949.02 - Step 5: Solve for x
x = 9,565,835,949.02/128,539.70 - Step 6: Final answer
x = 74,419.31
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.