Finding the Fourth Proportional to 83,649,072.70, 125,473,609.05 and 66,430,384.30
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Solution
The fourth proportional to 83,649,072.70, 125,473,609.05 and 66,430,384.30 is: 99,645,576.45
Step by Step Solution
- Step 1: Write the proportion equation
83,649,072.70 : 125,473,609.05 = 66,430,384.30 : x - Step 2: Convert to fraction form
83,649,072.70/125,473,609.05 = 66,430,384.30/x - Step 3: Cross multiply
83,649,072.70x = 125,473,609.05 × 66,430,384.30 - Step 4: Simplify right side
83,649,072.70x = 8,335,260,068,699,457 - Step 5: Solve for x
x = 8,335,260,068,699,457/83,649,072.70 - Step 6: Final answer
x = 99,645,576.45
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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.