Finding the Fourth Proportional to 31,528,998.99, 43,509,026.63 and 18,484,943.67
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Solution
The fourth proportional to 31,528,998.99, 43,509,026.63 and 18,484,943.67 is: 25,508,640.68
Step by Step Solution
- Step 1: Write the proportion equation
31,528,998.99 : 43,509,026.63 = 18,484,943.67 : x - Step 2: Convert to fraction form
31,528,998.99/43,509,026.63 = 18,484,943.67/x - Step 3: Cross multiply
31,528,998.99x = 43,509,026.63 × 18,484,943.67 - Step 4: Simplify right side
31,528,998.99x = 804,261,906,299,655.25 - Step 5: Solve for x
x = 804,261,906,299,655.25/31,528,998.99 - Step 6: Final answer
x = 25,508,640.68
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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.