Finding the Fourth Proportional to 74,497.70, 102,806.80 and 40,963.70
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Solution
The fourth proportional to 74,497.70, 102,806.80 and 40,963.70 is: 56,529.89
Step by Step Solution
- Step 1: Write the proportion equation
74,497.70 : 102,806.80 = 40,963.70 : x - Step 2: Convert to fraction form
74,497.70/102,806.80 = 40,963.70/x - Step 3: Cross multiply
74,497.70x = 102,806.80 × 40,963.70 - Step 4: Simplify right side
74,497.70x = 4,211,346,913.16 - Step 5: Solve for x
x = 4,211,346,913.16/74,497.70 - Step 6: Final answer
x = 56,529.89
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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.