Finding the Fourth Proportional to 85,540,385.80, 128,310,578.70 and 47,276,633.80
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Solution
The fourth proportional to 85,540,385.80, 128,310,578.70 and 47,276,633.80 is: 70,914,950.70
Step by Step Solution
- Step 1: Write the proportion equation
85,540,385.80 : 128,310,578.70 = 47,276,633.80 : x - Step 2: Convert to fraction form
85,540,385.80/128,310,578.70 = 47,276,633.80/x - Step 3: Cross multiply
85,540,385.80x = 128,310,578.70 × 47,276,633.80 - Step 4: Simplify right side
85,540,385.80x = 6,066,092,241,865,980 - Step 5: Solve for x
x = 6,066,092,241,865,980/85,540,385.80 - Step 6: Final answer
x = 70,914,950.70
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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.