Finding the Fourth Proportional to 74,831.13, 103,269.11 and 40,841.79
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Solution
The fourth proportional to 74,831.13, 103,269.11 and 40,841.79 is: 56,362.84
Step by Step Solution
- Step 1: Write the proportion equation
74,831.13 : 103,269.11 = 40,841.79 : x - Step 2: Convert to fraction form
74,831.13/103,269.11 = 40,841.79/x - Step 3: Cross multiply
74,831.13x = 103,269.11 × 40,841.79 - Step 4: Simplify right side
74,831.13x = 4,217,695,099.90 - Step 5: Solve for x
x = 4,217,695,099.90/74,831.13 - Step 6: Final answer
x = 56,362.84
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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.