Finding the Fourth Proportional to 90,068.24, 135,090.75 and 40,136.99
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Solution
The fourth proportional to 90,068.24, 135,090.75 and 40,136.99 is: 60,200.30
Step by Step Solution
- Step 1: Write the proportion equation
90,068.24 : 135,090.75 = 40,136.99 : x - Step 2: Convert to fraction form
90,068.24/135,090.75 = 40,136.99/x - Step 3: Cross multiply
90,068.24x = 135,090.75 × 40,136.99 - Step 4: Simplify right side
90,068.24x = 5,422,135,406.39 - Step 5: Solve for x
x = 5,422,135,406.39/90,068.24 - Step 6: Final answer
x = 60,200.30
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.