Finding the Fourth Proportional to 66,415,231.80, 99,622,847.70 and 55,077,823.80
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Solution
The fourth proportional to 66,415,231.80, 99,622,847.70 and 55,077,823.80 is: 82,616,735.70
Step by Step Solution
- Step 1: Write the proportion equation
66,415,231.80 : 99,622,847.70 = 55,077,823.80 : x - Step 2: Convert to fraction form
66,415,231.80/99,622,847.70 = 55,077,823.80/x - Step 3: Cross multiply
66,415,231.80x = 99,622,847.70 × 55,077,823.80 - Step 4: Simplify right side
66,415,231.80x = 5,487,009,652,074,835 - Step 5: Solve for x
x = 5,487,009,652,074,835/66,415,231.80 - Step 6: Final answer
x = 82,616,735.70
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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.