Finding the Fourth Proportional to 42,465,379.79, 63,687,571.95 and 18,201,555.20
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Solution
The fourth proportional to 42,465,379.79, 63,687,571.95 and 18,201,555.20 is: 27,297,833.25
Step by Step Solution
- Step 1: Write the proportion equation
42,465,379.79 : 63,687,571.95 = 18,201,555.20 : x - Step 2: Convert to fraction form
42,465,379.79/63,687,571.95 = 18,201,555.20/x - Step 3: Cross multiply
42,465,379.79x = 63,687,571.95 × 18,201,555.20 - Step 4: Simplify right side
42,465,379.79x = 1,159,212,856,401,896.75 - Step 5: Solve for x
x = 1,159,212,856,401,896.75/42,465,379.79 - Step 6: Final answer
x = 27,297,833.25
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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.