Finding the Fourth Proportional to 68,438,121, 102,661,904.88 and 19,916,376.72
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Solution
The fourth proportional to 68,438,121, 102,661,904.88 and 19,916,376.72 is: 29,875,939.64
Step by Step Solution
- Step 1: Write the proportion equation
68,438,121 : 102,661,904.88 = 19,916,376.72 : x - Step 2: Convert to fraction form
68,438,121/102,661,904.88 = 19,916,376.72/x - Step 3: Cross multiply
68,438,121x = 102,661,904.88 × 19,916,376.72 - Step 4: Simplify right side
68,438,121x = 2,044,653,172,382,886.25 - Step 5: Solve for x
x = 2,044,653,172,382,886.25/68,438,121 - Step 6: Final answer
x = 29,875,939.64
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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.