Finding the Fourth Proportional to 85,936,732.74, 128,903,820.84 and 21,240,534.24
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Solution
The fourth proportional to 85,936,732.74, 128,903,820.84 and 21,240,534.24 is: 31,860,485.42
Step by Step Solution
- Step 1: Write the proportion equation
85,936,732.74 : 128,903,820.84 = 21,240,534.24 : x - Step 2: Convert to fraction form
85,936,732.74/128,903,820.84 = 21,240,534.24/x - Step 3: Cross multiply
85,936,732.74x = 128,903,820.84 × 21,240,534.24 - Step 4: Simplify right side
85,936,732.74x = 2,737,986,020,218,845.50 - Step 5: Solve for x
x = 2,737,986,020,218,845.50/85,936,732.74 - Step 6: Final answer
x = 31,860,485.42
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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.