Finding the Fourth Proportional to 85,492.99, 128,242.09 and 29,332.31
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Solution
The fourth proportional to 85,492.99, 128,242.09 and 29,332.31 is: 43,999.35
Step by Step Solution
- Step 1: Write the proportion equation
85,492.99 : 128,242.09 = 29,332.31 : x - Step 2: Convert to fraction form
85,492.99/128,242.09 = 29,332.31/x - Step 3: Cross multiply
85,492.99x = 128,242.09 × 29,332.31 - Step 4: Simplify right side
85,492.99x = 3,761,635,969.39 - Step 5: Solve for x
x = 3,761,635,969.39/85,492.99 - Step 6: Final answer
x = 43,999.35
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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.