Finding the Fourth Proportional to 105,289.55, 145,299.23 and 57,542.88
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Solution
The fourth proportional to 105,289.55, 145,299.23 and 57,542.88 is: 79,408.99
Step by Step Solution
- Step 1: Write the proportion equation
105,289.55 : 145,299.23 = 57,542.88 : x - Step 2: Convert to fraction form
105,289.55/145,299.23 = 57,542.88/x - Step 3: Cross multiply
105,289.55x = 145,299.23 × 57,542.88 - Step 4: Simplify right side
105,289.55x = 8,360,936,628.93 - Step 5: Solve for x
x = 8,360,936,628.93/105,289.55 - Step 6: Final answer
x = 79,408.99
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1.5x scale
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.