Finding the Fourth Proportional to 83,622,606.20, 125,433,909.30 and 66,403,917.80
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Solution
The fourth proportional to 83,622,606.20, 125,433,909.30 and 66,403,917.80 is: 99,605,876.70
Step by Step Solution
- Step 1: Write the proportion equation
83,622,606.20 : 125,433,909.30 = 66,403,917.80 : x - Step 2: Convert to fraction form
83,622,606.20/125,433,909.30 = 66,403,917.80/x - Step 3: Cross multiply
83,622,606.20x = 125,433,909.30 × 66,403,917.80 - Step 4: Simplify right side
83,622,606.20x = 8,329,303,002,489,855 - Step 5: Solve for x
x = 8,329,303,002,489,855/83,622,606.20 - Step 6: Final answer
x = 99,605,876.70
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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.