Finding the Fourth Proportional to 76,239.84, 105,195.96 and 47,929.08
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Solution
The fourth proportional to 76,239.84, 105,195.96 and 47,929.08 is: 66,132.69
Step by Step Solution
- Step 1: Write the proportion equation
76,239.84 : 105,195.96 = 47,929.08 : x - Step 2: Convert to fraction form
76,239.84/105,195.96 = 47,929.08/x - Step 3: Cross multiply
76,239.84x = 105,195.96 × 47,929.08 - Step 4: Simplify right side
76,239.84x = 5,041,945,582.52 - Step 5: Solve for x
x = 5,041,945,582.52/76,239.84 - Step 6: Final answer
x = 66,132.69
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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.