Finding the Fourth Proportional to 10,172,102.64, 15,257,981.16 and 5,378,768.88
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Solution
The fourth proportional to 10,172,102.64, 15,257,981.16 and 5,378,768.88 is: 8,068,061.95
Step by Step Solution
- Step 1: Write the proportion equation
10,172,102.64 : 15,257,981.16 = 5,378,768.88 : x - Step 2: Convert to fraction form
10,172,102.64/15,257,981.16 = 5,378,768.88/x - Step 3: Cross multiply
10,172,102.64x = 15,257,981.16 × 5,378,768.88 - Step 4: Simplify right side
10,172,102.64x = 82,069,154,235,034.30 - Step 5: Solve for x
x = 82,069,154,235,034.30/10,172,102.64 - Step 6: Final answer
x = 8,068,061.95
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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.