Finding the Fourth Proportional to 28,272,452.21, 42,369,443.01 and 12,882,129.98
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Solution
The fourth proportional to 28,272,452.21, 42,369,443.01 and 12,882,129.98 is: 19,305,317.70
Step by Step Solution
- Step 1: Write the proportion equation
28,272,452.21 : 42,369,443.01 = 12,882,129.98 : x - Step 2: Convert to fraction form
28,272,452.21/42,369,443.01 = 12,882,129.98/x - Step 3: Cross multiply
28,272,452.21x = 42,369,443.01 × 12,882,129.98 - Step 4: Simplify right side
28,272,452.21x = 545,808,672,035,022.44 - Step 5: Solve for x
x = 545,808,672,035,022.44/28,272,452.21 - Step 6: Final answer
x = 19,305,317.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.