Finding the Fourth Proportional to 8,085,405.20, 12,128,107.80 and 5,806,113.80
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Solution
The fourth proportional to 8,085,405.20, 12,128,107.80 and 5,806,113.80 is: 8,709,170.70
Step by Step Solution
- Step 1: Write the proportion equation
8,085,405.20 : 12,128,107.80 = 5,806,113.80 : x - Step 2: Convert to fraction form
8,085,405.20/12,128,107.80 = 5,806,113.80/x - Step 3: Cross multiply
8,085,405.20x = 12,128,107.80 × 5,806,113.80 - Step 4: Simplify right side
8,085,405.20x = 70,417,174,065,467.64 - Step 5: Solve for x
x = 70,417,174,065,467.64/8,085,405.20 - Step 6: Final answer
x = 8,709,170.70
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1.5x scale
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.