Finding the Fourth Proportional to 75,678.19, 104,445.92 and 48,898.58
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Solution
The fourth proportional to 75,678.19, 104,445.92 and 48,898.58 is: 67,486.51
Step by Step Solution
- Step 1: Write the proportion equation
75,678.19 : 104,445.92 = 48,898.58 : x - Step 2: Convert to fraction form
75,678.19/104,445.92 = 48,898.58/x - Step 3: Cross multiply
75,678.19x = 104,445.92 × 48,898.58 - Step 4: Simplify right side
75,678.19x = 5,107,256,774.81 - Step 5: Solve for x
x = 5,107,256,774.81/75,678.19 - Step 6: Final answer
x = 67,486.51
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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.