Finding the Fourth Proportional to 85,647.51, 128,472.08 and 38,264.99
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Solution
The fourth proportional to 85,647.51, 128,472.08 and 38,264.99 is: 57,397.84
Step by Step Solution
- Step 1: Write the proportion equation
85,647.51 : 128,472.08 = 38,264.99 : x - Step 2: Convert to fraction form
85,647.51/128,472.08 = 38,264.99/x - Step 3: Cross multiply
85,647.51x = 128,472.08 × 38,264.99 - Step 4: Simplify right side
85,647.51x = 4,915,982,022.79 - Step 5: Solve for x
x = 4,915,982,022.79/85,647.51 - Step 6: Final answer
x = 57,397.84
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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.