Finding the Fourth Proportional to 76,140.84, 105,122.16 and 48,929.09
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Solution
The fourth proportional to 76,140.84, 105,122.16 and 48,929.09 is: 67,552.86
Step by Step Solution
- Step 1: Write the proportion equation
76,140.84 : 105,122.16 = 48,929.09 : x - Step 2: Convert to fraction form
76,140.84/105,122.16 = 48,929.09/x - Step 3: Cross multiply
76,140.84x = 105,122.16 × 48,929.09 - Step 4: Simplify right side
76,140.84x = 5,143,531,627.63 - Step 5: Solve for x
x = 5,143,531,627.63/76,140.84 - Step 6: Final answer
x = 67,552.86
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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.