Finding the Fourth Proportional to 74,713.99, 103,102.30 and 40,721.75
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Solution
The fourth proportional to 74,713.99, 103,102.30 and 40,721.75 is: 56,194.38
Step by Step Solution
- Step 1: Write the proportion equation
74,713.99 : 103,102.30 = 40,721.75 : x - Step 2: Convert to fraction form
74,713.99/103,102.30 = 40,721.75/x - Step 3: Cross multiply
74,713.99x = 103,102.30 × 40,721.75 - Step 4: Simplify right side
74,713.99x = 4,198,506,085.03 - Step 5: Solve for x
x = 4,198,506,085.03/74,713.99 - Step 6: Final answer
x = 56,194.38
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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.