Finding the Fourth Proportional to 7,105,124.80, 10,668,746.40 and 4,119,140.80
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Solution
The fourth proportional to 7,105,124.80, 10,668,746.40 and 4,119,140.80 is: 6,185,122.69
Step by Step Solution
- Step 1: Write the proportion equation
7,105,124.80 : 10,668,746.40 = 4,119,140.80 : x - Step 2: Convert to fraction form
7,105,124.80/10,668,746.40 = 4,119,140.80/x - Step 3: Cross multiply
7,105,124.80x = 10,668,746.40 × 4,119,140.80 - Step 4: Simplify right side
7,105,124.80x = 43,946,068,581,093.12 - Step 5: Solve for x
x = 43,946,068,581,093.12/7,105,124.80 - Step 6: Final answer
x = 6,185,122.69
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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.