Finding the Fourth Proportional to 84,240,919.13, 126,361,378.69 and 20,415,511.13
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Solution
The fourth proportional to 84,240,919.13, 126,361,378.69 and 20,415,511.13 is: 30,623,266.69
Step by Step Solution
- Step 1: Write the proportion equation
84,240,919.13 : 126,361,378.69 = 20,415,511.13 : x - Step 2: Convert to fraction form
84,240,919.13/126,361,378.69 = 20,415,511.13/x - Step 3: Cross multiply
84,240,919.13x = 126,361,378.69 × 20,415,511.13 - Step 4: Simplify right side
84,240,919.13x = 2,579,732,132,364,994 - Step 5: Solve for x
x = 2,579,732,132,364,994/84,240,919.13 - Step 6: Final answer
x = 30,623,266.69
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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.