Finding the Fourth Proportional to 39,960,960.90, 55,146,125.36 and 21,626,246.40
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Solution
The fourth proportional to 39,960,960.90, 55,146,125.36 and 21,626,246.40 is: 29,844,219.66
Step by Step Solution
- Step 1: Write the proportion equation
39,960,960.90 : 55,146,125.36 = 21,626,246.40 : x - Step 2: Convert to fraction form
39,960,960.90/55,146,125.36 = 21,626,246.40/x - Step 3: Cross multiply
39,960,960.90x = 55,146,125.36 × 21,626,246.40 - Step 4: Simplify right side
39,960,960.90x = 1,192,603,694,887,916.25 - Step 5: Solve for x
x = 1,192,603,694,887,916.25/39,960,960.90 - Step 6: Final answer
x = 29,844,219.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.