Finding the Fourth Proportional to 74,532,143.28, 102,894,730.20 and 52,273,485.84
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Solution
The fourth proportional to 74,532,143.28, 102,894,730.20 and 52,273,485.84 is: 72,165,725.89
Step by Step Solution
- Step 1: Write the proportion equation
74,532,143.28 : 102,894,730.20 = 52,273,485.84 : x - Step 2: Convert to fraction form
74,532,143.28/102,894,730.20 = 52,273,485.84/x - Step 3: Cross multiply
74,532,143.28x = 102,894,730.20 × 52,273,485.84 - Step 4: Simplify right side
74,532,143.28x = 5,378,666,222,120,321 - Step 5: Solve for x
x = 5,378,666,222,120,321/74,532,143.28 - Step 6: Final answer
x = 72,165,725.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.