Finding the Fourth Proportional to 28,351,612.80, 42,527,419.20 and 16,208,611.20
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Solution
The fourth proportional to 28,351,612.80, 42,527,419.20 and 16,208,611.20 is: 24,312,916.80
Step by Step Solution
- Step 1: Write the proportion equation
28,351,612.80 : 42,527,419.20 = 16,208,611.20 : x - Step 2: Convert to fraction form
28,351,612.80/42,527,419.20 = 16,208,611.20/x - Step 3: Cross multiply
28,351,612.80x = 42,527,419.20 × 16,208,611.20 - Step 4: Simplify right side
28,351,612.80x = 689,310,403,152,215 - Step 5: Solve for x
x = 689,310,403,152,215/28,351,612.80 - Step 6: Final answer
x = 24,312,916.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.