Finding the Fourth Proportional to 70,343.02, 105,524.93 and 20,416.65
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Solution
The fourth proportional to 70,343.02, 105,524.93 and 20,416.65 is: 30,627.99
Step by Step Solution
- Step 1: Write the proportion equation
70,343.02 : 105,524.93 = 20,416.65 : x - Step 2: Convert to fraction form
70,343.02/105,524.93 = 20,416.65/x - Step 3: Cross multiply
70,343.02x = 105,524.93 × 20,416.65 - Step 4: Simplify right side
70,343.02x = 2,154,465,562.08 - Step 5: Solve for x
x = 2,154,465,562.08/70,343.02 - Step 6: Final answer
x = 30,627.99
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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.