Finding the Fourth Proportional to 39,216,139.98, 54,117,497.07 and 21,812,110.62
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Solution
The fourth proportional to 39,216,139.98, 54,117,497.07 and 21,812,110.62 is: 30,100,280.99
Step by Step Solution
- Step 1: Write the proportion equation
39,216,139.98 : 54,117,497.07 = 21,812,110.62 : x - Step 2: Convert to fraction form
39,216,139.98/54,117,497.07 = 21,812,110.62/x - Step 3: Cross multiply
39,216,139.98x = 54,117,497.07 × 21,812,110.62 - Step 4: Simplify right side
39,216,139.98x = 1,180,416,832,568,366 - Step 5: Solve for x
x = 1,180,416,832,568,366/39,216,139.98 - Step 6: Final answer
x = 30,100,280.99
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1.5x scale
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.