Finding the Fourth Proportional to 74,232.19, 102,440.70 and 40,240.74
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Solution
The fourth proportional to 74,232.19, 102,440.70 and 40,240.74 is: 55,532.37
Step by Step Solution
- Step 1: Write the proportion equation
74,232.19 : 102,440.70 = 40,240.74 : x - Step 2: Convert to fraction form
74,232.19/102,440.70 = 40,240.74/x - Step 3: Cross multiply
74,232.19x = 102,440.70 × 40,240.74 - Step 4: Simplify right side
74,232.19x = 4,122,289,574.12 - Step 5: Solve for x
x = 4,122,289,574.12/74,232.19 - Step 6: Final answer
x = 55,532.37
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Double scale
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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.