Finding the Fourth Proportional to 105,525.32, 145,628.60 and 57,778.99
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Solution
The fourth proportional to 105,525.32, 145,628.60 and 57,778.99 is: 79,737.01
Step by Step Solution
- Step 1: Write the proportion equation
105,525.32 : 145,628.60 = 57,778.99 : x - Step 2: Convert to fraction form
105,525.32/145,628.60 = 57,778.99/x - Step 3: Cross multiply
105,525.32x = 145,628.60 × 57,778.99 - Step 4: Simplify right side
105,525.32x = 8,414,272,770.15 - Step 5: Solve for x
x = 8,414,272,770.15/105,525.32 - Step 6: Final answer
x = 79,737.01
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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.