Finding the Fourth Proportional to 106,582.16, 159,936.60 and 47,421.20
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Solution
The fourth proportional to 106,582.16, 159,936.60 and 47,421.20 is: 71,159.99
Step by Step Solution
- Step 1: Write the proportion equation
106,582.16 : 159,936.60 = 47,421.20 : x - Step 2: Convert to fraction form
106,582.16/159,936.60 = 47,421.20/x - Step 3: Cross multiply
106,582.16x = 159,936.60 × 47,421.20 - Step 4: Simplify right side
106,582.16x = 7,584,385,495.92 - Step 5: Solve for x
x = 7,584,385,495.92/106,582.16 - Step 6: Final answer
x = 71,159.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.