Finding the Fourth Proportional to 78,284,664.90, 108,019,865.28 and 45,247,995.99
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Solution
The fourth proportional to 78,284,664.90, 108,019,865.28 and 45,247,995.99 is: 62,434,736.58
Step by Step Solution
- Step 1: Write the proportion equation
78,284,664.90 : 108,019,865.28 = 45,247,995.99 : x - Step 2: Convert to fraction form
78,284,664.90/108,019,865.28 = 45,247,995.99/x - Step 3: Cross multiply
78,284,664.90x = 108,019,865.28 × 45,247,995.99 - Step 4: Simplify right side
78,284,664.90x = 4,887,682,431,029,781 - Step 5: Solve for x
x = 4,887,682,431,029,781/78,284,664.90 - Step 6: Final answer
x = 62,434,736.58
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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.