Finding the Fourth Proportional to 101,738,986.42, 140,398,467.87 and 55,328,251.18
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Solution
The fourth proportional to 101,738,986.42, 140,398,467.87 and 55,328,251.18 is: 76,352,261.50
Step by Step Solution
- Step 1: Write the proportion equation
101,738,986.42 : 140,398,467.87 = 55,328,251.18 : x - Step 2: Convert to fraction form
101,738,986.42/140,398,467.87 = 55,328,251.18/x - Step 3: Cross multiply
101,738,986.42x = 140,398,467.87 × 55,328,251.18 - Step 4: Simplify right side
101,738,986.42x = 7,768,001,695,598,520 - Step 5: Solve for x
x = 7,768,001,695,598,520/101,738,986.42 - Step 6: Final answer
x = 76,352,261.50
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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.