Finding the Fourth Proportional to 115,917,964.11, 159,970,626.81 and 63,708,850.35
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Solution
The fourth proportional to 115,917,964.11, 159,970,626.81 and 63,708,850.35 is: 87,920,321.95
Step by Step Solution
- Step 1: Write the proportion equation
115,917,964.11 : 159,970,626.81 = 63,708,850.35 : x - Step 2: Convert to fraction form
115,917,964.11/159,970,626.81 = 63,708,850.35/x - Step 3: Cross multiply
115,917,964.11x = 159,970,626.81 × 63,708,850.35 - Step 4: Simplify right side
115,917,964.11x = 10,191,544,723,833,988 - Step 5: Solve for x
x = 10,191,544,723,833,988/115,917,964.11 - Step 6: Final answer
x = 87,920,321.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.