Finding the Fourth Proportional to 70,393.12, 106,122.28 and 66,582.88
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Solution
The fourth proportional to 70,393.12, 106,122.28 and 66,582.88 is: 100,378.09
Step by Step Solution
- Step 1: Write the proportion equation
70,393.12 : 106,122.28 = 66,582.88 : x - Step 2: Convert to fraction form
70,393.12/106,122.28 = 66,582.88/x - Step 3: Cross multiply
70,393.12x = 106,122.28 × 66,582.88 - Step 4: Simplify right side
70,393.12x = 7,065,927,034.57 - Step 5: Solve for x
x = 7,065,927,034.57/70,393.12 - Step 6: Final answer
x = 100,378.09
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.