Finding the Fourth Proportional to 28,977,433.57, 39,990,390.74 and 16,420,925.44
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Solution
The fourth proportional to 28,977,433.57, 39,990,390.74 and 16,420,925.44 is: 22,661,745.49
Step by Step Solution
- Step 1: Write the proportion equation
28,977,433.57 : 39,990,390.74 = 16,420,925.44 : x - Step 2: Convert to fraction form
28,977,433.57/39,990,390.74 = 16,420,925.44/x - Step 3: Cross multiply
28,977,433.57x = 39,990,390.74 × 16,420,925.44 - Step 4: Simplify right side
28,977,433.57x = 656,679,224,658,006.50 - Step 5: Solve for x
x = 656,679,224,658,006.50/28,977,433.57 - Step 6: Final answer
x = 22,661,745.49
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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.