Finding the Fourth Proportional to 39,303,565.20, 58,963,642.20 and 12,379,942.80
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Solution
The fourth proportional to 39,303,565.20, 58,963,642.20 and 12,379,942.80 is: 18,572,526.79
Step by Step Solution
- Step 1: Write the proportion equation
39,303,565.20 : 58,963,642.20 = 12,379,942.80 : x - Step 2: Convert to fraction form
39,303,565.20/58,963,642.20 = 12,379,942.80/x - Step 3: Cross multiply
39,303,565.20x = 58,963,642.20 × 12,379,942.80 - Step 4: Simplify right side
39,303,565.20x = 729,966,517,715,666.25 - Step 5: Solve for x
x = 729,966,517,715,666.25/39,303,565.20 - Step 6: Final answer
x = 18,572,526.79
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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.