Finding the Fourth Proportional to 105,290.99, 145,301.32 and 57,544.68
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Solution
The fourth proportional to 105,290.99, 145,301.32 and 57,544.68 is: 79,411.52
Step by Step Solution
- Step 1: Write the proportion equation
105,290.99 : 145,301.32 = 57,544.68 : x - Step 2: Convert to fraction form
105,290.99/145,301.32 = 57,544.68/x - Step 3: Cross multiply
105,290.99x = 145,301.32 × 57,544.68 - Step 4: Simplify right side
105,290.99x = 8,361,317,600.62 - Step 5: Solve for x
x = 8,361,317,600.62/105,290.99 - Step 6: Final answer
x = 79,411.52
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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.