Finding the Fourth Proportional to 39,957,829.68, 55,141,805.08 and 21,623,115.20
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Solution
The fourth proportional to 39,957,829.68, 55,141,805.08 and 21,623,115.20 is: 29,839,899.04
Step by Step Solution
- Step 1: Write the proportion equation
39,957,829.68 : 55,141,805.08 = 21,623,115.20 : x - Step 2: Convert to fraction form
39,957,829.68/55,141,805.08 = 21,623,115.20/x - Step 3: Cross multiply
39,957,829.68x = 55,141,805.08 × 21,623,115.20 - Step 4: Simplify right side
39,957,829.68x = 1,192,337,603,580,785.25 - Step 5: Solve for x
x = 1,192,337,603,580,785.25/39,957,829.68 - Step 6: Final answer
x = 29,839,899.04
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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.