Finding the Fourth Proportional to 70,818.05, 106,210.74 and 20,216.13
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Solution
The fourth proportional to 70,818.05, 106,210.74 and 20,216.13 is: 30,319.54
Step by Step Solution
- Step 1: Write the proportion equation
70,818.05 : 106,210.74 = 20,216.13 : x - Step 2: Convert to fraction form
70,818.05/106,210.74 = 20,216.13/x - Step 3: Cross multiply
70,818.05x = 106,210.74 × 20,216.13 - Step 4: Simplify right side
70,818.05x = 2,147,170,402.19 - Step 5: Solve for x
x = 2,147,170,402.19/70,818.05 - Step 6: Final answer
x = 30,319.54
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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.