Finding the Fourth Proportional to 80,457,749.90, 120,686,624.85 and 19,873,475.90
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Solution
The fourth proportional to 80,457,749.90, 120,686,624.85 and 19,873,475.90 is: 29,810,213.85
Step by Step Solution
- Step 1: Write the proportion equation
80,457,749.90 : 120,686,624.85 = 19,873,475.90 : x - Step 2: Convert to fraction form
80,457,749.90/120,686,624.85 = 19,873,475.90/x - Step 3: Cross multiply
80,457,749.90x = 120,686,624.85 × 19,873,475.90 - Step 4: Simplify right side
80,457,749.90x = 2,398,462,730,408,816 - Step 5: Solve for x
x = 2,398,462,730,408,816/80,457,749.90 - Step 6: Final answer
x = 29,810,213.85
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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.