Finding the Fourth Proportional to 28,805,505.92, 39,755,238.17 and 18,890,731.09
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Solution
The fourth proportional to 28,805,505.92, 39,755,238.17 and 18,890,731.09 is: 26,071,596.03
Step by Step Solution
- Step 1: Write the proportion equation
28,805,505.92 : 39,755,238.17 = 18,890,731.09 : x - Step 2: Convert to fraction form
28,805,505.92/39,755,238.17 = 18,890,731.09/x - Step 3: Cross multiply
28,805,505.92x = 39,755,238.17 × 18,890,731.09 - Step 4: Simplify right side
28,805,505.92x = 751,005,513,688,373.75 - Step 5: Solve for x
x = 751,005,513,688,373.75/28,805,505.92 - Step 6: Final answer
x = 26,071,596.03
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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.