Finding the Fourth Proportional to 74,430.84, 102,714.68 and 40,439.48
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Solution
The fourth proportional to 74,430.84, 102,714.68 and 40,439.48 is: 55,806.55
Step by Step Solution
- Step 1: Write the proportion equation
74,430.84 : 102,714.68 = 40,439.48 : x - Step 2: Convert to fraction form
74,430.84/102,714.68 = 40,439.48/x - Step 3: Cross multiply
74,430.84x = 102,714.68 × 40,439.48 - Step 4: Simplify right side
74,430.84x = 4,153,728,247.57 - Step 5: Solve for x
x = 4,153,728,247.57/74,430.84 - Step 6: Final answer
x = 55,806.55
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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.