Finding the Fourth Proportional to 28,402,493.80, 42,603,740.70 and 21,684,029.80
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Solution
The fourth proportional to 28,402,493.80, 42,603,740.70 and 21,684,029.80 is: 32,526,044.70
Step by Step Solution
- Step 1: Write the proportion equation
28,402,493.80 : 42,603,740.70 = 21,684,029.80 : x - Step 2: Convert to fraction form
28,402,493.80/42,603,740.70 = 21,684,029.80/x - Step 3: Cross multiply
28,402,493.80x = 42,603,740.70 × 21,684,029.80 - Step 4: Simplify right side
28,402,493.80x = 923,820,782,930,273 - Step 5: Solve for x
x = 923,820,782,930,273/28,402,493.80 - Step 6: Final answer
x = 32,526,044.70
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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.