Finding the Fourth Proportional to 87,660,174.30, 131,490,261.45 and 39,791,118.30
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Solution
The fourth proportional to 87,660,174.30, 131,490,261.45 and 39,791,118.30 is: 59,686,677.45
Step by Step Solution
- Step 1: Write the proportion equation
87,660,174.30 : 131,490,261.45 = 39,791,118.30 : x - Step 2: Convert to fraction form
87,660,174.30/131,490,261.45 = 39,791,118.30/x - Step 3: Cross multiply
87,660,174.30x = 131,490,261.45 × 39,791,118.30 - Step 4: Simplify right side
87,660,174.30x = 5,232,144,548,654,879 - Step 5: Solve for x
x = 5,232,144,548,654,879/87,660,174.30 - Step 6: Final answer
x = 59,686,677.45
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Double scale
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Similar ratio
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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.