Finding the Fourth Proportional to 66,430,363.20, 99,645,544.80 and 49,211,674.80
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Solution
The fourth proportional to 66,430,363.20, 99,645,544.80 and 49,211,674.80 is: 73,817,512.20
Step by Step Solution
- Step 1: Write the proportion equation
66,430,363.20 : 99,645,544.80 = 49,211,674.80 : x - Step 2: Convert to fraction form
66,430,363.20/99,645,544.80 = 49,211,674.80/x - Step 3: Cross multiply
66,430,363.20x = 99,645,544.80 × 49,211,674.80 - Step 4: Simplify right side
66,430,363.20x = 4,903,724,145,966,431 - Step 5: Solve for x
x = 4,903,724,145,966,431/66,430,363.20 - Step 6: Final answer
x = 73,817,512.20
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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.