Finding the Fourth Proportional to 80,853,853.70, 121,286,029.35 and 42,590,101.70
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Solution
The fourth proportional to 80,853,853.70, 121,286,029.35 and 42,590,101.70 is: 63,887,917.38
Step by Step Solution
- Step 1: Write the proportion equation
80,853,853.70 : 121,286,029.35 = 42,590,101.70 : x - Step 2: Convert to fraction form
80,853,853.70/121,286,029.35 = 42,590,101.70/x - Step 3: Cross multiply
80,853,853.70x = 121,286,029.35 × 42,590,101.70 - Step 4: Simplify right side
80,853,853.70x = 5,165,584,324,805,685 - Step 5: Solve for x
x = 5,165,584,324,805,685/80,853,853.70 - Step 6: Final answer
x = 63,887,917.38
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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.