Finding the Fourth Proportional to 79,124,943.08, 118,676,640.47 and 20,827,738.91
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Solution
The fourth proportional to 79,124,943.08, 118,676,640.47 and 20,827,738.91 is: 31,238,772.33
Step by Step Solution
- Step 1: Write the proportion equation
79,124,943.08 : 118,676,640.47 = 20,827,738.91 : x - Step 2: Convert to fraction form
79,124,943.08/118,676,640.47 = 20,827,738.91/x - Step 3: Cross multiply
79,124,943.08x = 118,676,640.47 × 20,827,738.91 - Step 4: Simplify right side
79,124,943.08x = 2,471,766,082,617,653 - Step 5: Solve for x
x = 2,471,766,082,617,653/79,124,943.08 - Step 6: Final answer
x = 31,238,772.33
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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.