Finding the Fourth Proportional to 43,508,718.70, 65,263,078.05 and 13,212,645.10
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Solution
The fourth proportional to 43,508,718.70, 65,263,078.05 and 13,212,645.10 is: 19,818,967.65
Step by Step Solution
- Step 1: Write the proportion equation
43,508,718.70 : 65,263,078.05 = 13,212,645.10 : x - Step 2: Convert to fraction form
43,508,718.70/65,263,078.05 = 13,212,645.10/x - Step 3: Cross multiply
43,508,718.70x = 65,263,078.05 × 13,212,645.10 - Step 4: Simplify right side
43,508,718.70x = 862,297,888,408,250 - Step 5: Solve for x
x = 862,297,888,408,250/43,508,718.70 - Step 6: Final answer
x = 19,818,967.65
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Similar ratio
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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.