Finding the Fourth Proportional to 38,382,838.62, 52,968,188.70 and 20,979,173.76
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Solution
The fourth proportional to 38,382,838.62, 52,968,188.70 and 20,979,173.76 is: 28,951,189.50
Step by Step Solution
- Step 1: Write the proportion equation
38,382,838.62 : 52,968,188.70 = 20,979,173.76 : x - Step 2: Convert to fraction form
38,382,838.62/52,968,188.70 = 20,979,173.76/x - Step 3: Cross multiply
38,382,838.62x = 52,968,188.70 × 20,979,173.76 - Step 4: Simplify right side
38,382,838.62x = 1,111,228,834,489,768.62 - Step 5: Solve for x
x = 1,111,228,834,489,768.62/38,382,838.62 - Step 6: Final answer
x = 28,951,189.50
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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.