Finding the Fourth Proportional to 85,391,998,868.40, 128,062,210,128.08 and 25,684,811,108.99
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Solution
The fourth proportional to 85,391,998,868.40, 128,062,210,128.08 and 25,684,811,108.99 is: 38,519,459,913.44
Step by Step Solution
- Step 1: Write the proportion equation
85,391,998,868.40 : 128,062,210,128.08 = 25,684,811,108.99 : x - Step 2: Convert to fraction form
85,391,998,868.40/128,062,210,128.08 = 25,684,811,108.99/x - Step 3: Cross multiply
85,391,998,868.40x = 128,062,210,128.08 × 25,684,811,108.99 - Step 4: Simplify right side
85,391,998,868.40x = 3,289,253,677,339,905,097,728 - Step 5: Solve for x
x = 3,289,253,677,339,905,097,728/85,391,998,868.40 - Step 6: Final answer
x = 38,519,459,913.44
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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.