Finding the Fourth Proportional to 99,939,764.20, 149,909,646.30 and 48,854,554.60
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Solution
The fourth proportional to 99,939,764.20, 149,909,646.30 and 48,854,554.60 is: 73,281,831.90
Step by Step Solution
- Step 1: Write the proportion equation
99,939,764.20 : 149,909,646.30 = 48,854,554.60 : x - Step 2: Convert to fraction form
99,939,764.20/149,909,646.30 = 48,854,554.60/x - Step 3: Cross multiply
99,939,764.20x = 149,909,646.30 × 48,854,554.60 - Step 4: Simplify right side
99,939,764.20x = 7,323,769,000,230,039 - Step 5: Solve for x
x = 7,323,769,000,230,039/99,939,764.20 - Step 6: Final answer
x = 73,281,831.90
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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.